Refraction of Light

What is Refraction of Light? Refraction is the bending of light when it travels from one medium to another medium. Refraction is caused by the change in speed of light.
In the beginning of the video, we show a Magic trick based on refraction! We discuss the different cases of refraction of light in detail: When light travels from a denser to a rarer medium and from a rarer to a denser material. Also when light is incident normally on a medium.
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[@DreamFunHAS_]

*NO*

[@HithikshaS-j5r]

1.it bends towards the normal 2., a ray of refracts when it travel from 1 medium to another medium 3.yes

[@abeljoseph5463]

Answers for the questions asked in the video, A.1) When light travels from water (optically denser medium) to air (optically rarer medium), it's speed increases which is why it tends to move away from the normal. Here, Angle of incidence < Angle of Refraction A.2) Refraction of light occurs when the light ray travels from one medium to another medium. The reason behind this is because the speed of the light changes while doing so. For eg, when light travels from air to glass, it's speed decreases which is why it refracts from it's original path. Whereas when light travels from glass to air, it's speed increases which is why it bends away. A.3) Yes, a pool appears to be shallow when viewed normally as the refraction of light comes into play. First time seeing your video and I absolutely liked it 📝👍🏻

[@DL7igmawlong]

Thanks for ur answer bro

[@nagakumarikommana1443]

Thanks for your answers

[@waitaminute7554]

1. It will bend away from the normal; most probably towards the right and the angle of refraction would be larger than the angle of incidence. Also, the speed increases as the density of the material decreases. 2. Refraction takes place because of the change in the speed of light. This happens if a medium is either denser or less dense than the other. 3. Yes. The pool appears shallower because of the bending of light or the refraction of light.

[@agastya_10a57]

Q1. Ans.When the light travels from the denser medium to the rarer medium,the light rays travel away from the medium.Thus,the angle of incidence < angle of refraction. Q2. Ans.The cause of refraction of light is; Change in medium. And change in speed of light. Q3. Ans.Yes,the pool appears to be shallow when viewed normally because of refraction. Hello Sir, it was very useful for me. As I am a physics lover,I enjoyed the class.

[@smritimondal1057]

1) When light travels from water to air, it bends away form the normal 2)The cause of refraction is the change in velocity of light when traveling from one media to another as the optical density differs. 3) The pool appears to be shallow as light is traveling from air(an optically rarer medium) to water (an optically denser medium)

[@darshanlal2394]

F

[@i_am_esea_dedej9633]

This video was more helpful than my physics teacher

[@AliHussain-pu1mt]

Same

[@sanjaythakare5787]

Yes same with me.

[@Vlogs.936]

Same

[@adilkamar8935]

Correct

[@mycreativelearning3418]

SS same maa siru chaptadu chuudu niddara vastadi raa sami ranga.. Asulu vakka mukka kuuda artham kaadu... Ee sir chaptante 👌👌👌ga artham avutundi...

[@sandipanganguly2219]

ANSWERS 1. AWAY FROM NORMAL i < r 2. BECAUSE OF THE CHANGE IN SPEED OF LIGHT 3. YES

[@MayowaOluwatoyin]

1.) The light bends away from the normal. 2.) Refraction occurs due to the change in the speed of light 3.) Yes because of the refraction of light

[@sangeeta789]

Can you explain your first answer

[@raneenaleen2301]

@@sangeeta789so it travel from water to air and air is less denser than water so it will move away from the normal

[@sangeeta789]

@raneenaleen2301 thanks 👍🙏

[@ak_gaming_1m435]

Legends are watching this video now😜 due to tomorrow's physics exam.🤣

[@moorthythangavel6268]

Yes bro you are 💯 correct.😉

[@harshusvlog8152]

🤣🤣 yes bro

[@TiTxNzz]

Tomorrow we have exam? What is the portions 😂

[@greyrhus8030]

Yeeeee true

[@TiTxNzz]

@@greyrhus8030 watching that now? After exam

[@ydettearano6187]

Its a great help for those teachers who struggled in teaching physics, its very informative and your explanation is very helpful. Thank you so much

[@ManochaAcademy]

It's my pleasure

[@tejaskumarshahi3828]

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[@tejaskumarshahi3828]

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[@AquilaPlaysYt]

@@tejaskumarshahi3828 Yes

[@AnushkaPashankar18]

Such A beautiful way of teaching, as due to online school many concepts doesn't get clear but manocha academy clears it all ☺thank you much

[@irshadpasha3697]

Wow it's true

[@vinitasharma4504]

Yes

[@baileygilbert5763]

1. Away from the normal 2. When a light ray goes from a medium to a denser or rarer medium. 3. No, This is becuase there is no rarefection of the light so you are seeing with no bent light. Only the speed of light changes.

[@Dev_bhog]

1. The light bends away from normal. 2. The cause of refraction of light is change in the speed. If the speed is lesser then the ray of light comes near to the normal else it gets far away. 3. Yea

[@hemendeka6531]

1) When light travels from water to air it bends away from the normal as water is optically more denser then air. So the speed of light increases from water to air. 2) Refraction of light takes place due to the change in the speed of light as it passes from one transparent medium to another obliquely. 3) No, a pool does not appear to be shallow when viewed normally. This is because : # no refraction takes place when light is incident normally.

[@Nishantkumar-bg1ro]

answers : 1. Away from the normal 2. change in speed of light 3. Yes

[@Obessedwithyou2828]

*Answers of the TOP 3 QUESTIONS:-* 1) When light travels from an Optically denser medium (water) to an Optically rarer medium (air), it bends away from the Normal. 2) Refraction happens due to change in speed of light as it passes through different mediums. 3) No. In this case, if the normal view is perpendicular to the pool, then the pool won't apper shallow. As the light will pass perpendicular to the pool, so it won't bend. I hope my answers are all correct!! ❤

[@Rashidkhan-tp2op]

1st answer Light bends away from the normal when it travels from water to air. 2nd answer When the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. 3rd answer Refraction of light as the surface of water makes swimming pool appear shallower then its actual depth when viewed from directly above. ❤❤❤❤❤❤❤❤❤ That is my answers GOD BLESS YOU TEACHER

[@indrajeet9711]

Who are watching this before one day of exam .1like=80 marks if you not like you got 0 marks😂😂

[@Techboomgamerz321]

Ok bro😂😂

[@pro_indian_pvper1947]

bro I am watching 1 day before the exam 😅...

[@Music_that_heals_you]

I will not like no need to like dongi baba

[@Music_that_heals_you]

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[@s3kshii]

Manocha Academy is better then any other study aap...

[@Pagalworldieiron]

1) when light travels from water (that is relatively denser medium) to air (that is relatively rarer medium )it bends away from the normal.. 2) the main casue of the refraction of the light is the bending of light when its travels from a transparent medium to a another transparent medium with higher or greater optical density.... And when light travels from one medium to another its speed slows down and hence as a result the light ray bends . 3) yes and it is because of the refraction of the light 2)

[@MayowaOluwatoyin]

Still very useful till 2024 I'm I right guys?

[@ManochaAcademy]

Click here to try the Quiz and Top 3 Questions for this video: www.manochaacademy.com/physics-cbse-class-10/refraction-of-light/l/what-is-refraction-of-light

[@padmakaryanamandra8436]

Sir, if i have any chance, I'll give you a best teacher award. We don't need to read books after listening to your classes.

[@ratansinghshekhawat4530]

Question 1: light will bend away from the normal. Question 2: The speed of light is different at different medium, less in denser and more in rarer, when light ray enters a denser medium it's speed decreases and bends towards the normal and in rarer medium it's speed increases and bend away from the normal Question 3: As the refraction of light is more so pool appears to be shallow when viewed normally

[@blueyuki1]

even tho this video is 5 years ago and today is 2024, this is honestly still one of the best education video ever, it gives me terms, its so easy to understand!, even a fifth graders understand this!, thanks for producing one of the best education video ever, this is so easy to understand! Q1 It goes to the incidence ray (which means go down) if theres a situation that the ray is reflecting flat like absolutely then it wont change the direction it will be the same) Q2 Well, depends on the density, if the density or medium is strong then it can refracts Q3 Because our eyes are not that wonderful, we will see them as its not that far when touching the swimming pool but in reality its tall, the eye just got tricked by the refraction of the light to the pool.

[@Idle_Jess28]

Q1) Away from the normal Q2) The slowing down or increasing of light as it enters a new medium. Q3) A pool might appear different depending on the path of light and its refraction.

[@diiya123]

Sir.. Truly u r amazing.. Excellent... Such a fantastic teacher u r... Ur videos are the best compared to any other online coaching classes.

[@ManochaAcademy]

Thanks a ton! 😊

[@vyneel]

Wow... this is really helpful. You're better than my physics teacher! Ans: 1) away from the normal 2) the change in the speed of light 3) shallow (i think)

[@rithizx]

HW: 1) The light when it is travel from water to air ..it bends away from the Normal ,i

[@agrimakrishna317]

Who all r watching this in 2023 🤝

[@TWCubed]

Me

[@jakelorcan]

me toooooo haha

[@abhishektheresa]

Me:/

[@brajgopiyan4793]

Me

[@meganrose7158]

Meeeee

[@noahsan5221]

In our exam they asked "Is angle of incidence=Angle of refraction?" I answered =No Just because of you and the question is for 2 marks I got 2 marks by you sir,THANK YOU!! no one wrote correct in my class except me 😂

[@adithyap8366]

Q.1 - It will bend farther away from the normal Q.2 - the cause is the change of speed of light when passing through materials Q.3 - Yes

[@rajashekharmenda1179]

Answer 1: light bends away from the normal as it travels from denser to rarer medium Answer 2: change in the speed of light when it changes its medium causes refraction Answer 3: No as there is only one medium i.e. air there is no refraction taking place. As there is no refraction of light the pool doesn't appear to be shallow Plz reply Thanks for explaining the concept

[@sidakmakker1846]

I honestly love this guy !!! I would prefer every kid to watch his videos !! Man he's perfect 😭😭❤️

[@craftyandstudy3123]

Q.1 answer- the light ray bends away from the normal Q.2 answer- the change in the speed of light ray when it passes through one transparent media to another is the cause of refraction Q.3- yes,as refraction is taking place

[@mastifunn2012]

1 . the light ray travels away from normal 2.the refraction occurs due to change in medium ( could be denser or rare than the first medium causing light to bend away or towards normal ) 3. The pool looks more shallower as our eyes tends to look the pool with light ray straight but when the light enters from rarer to dense medium it bends towards normal causing to look more shallower

[@Alizain-l7h]

Ans1: When light travel from water to air means denser to rarer its bends away from the normal. Ans2: Refraction of light cause due to change of speed and cause by optically density of the medium. Ans2:Yes.Pool appear to be shallower than they actually is due to phenomena called refraction.Pool looks shallower due to light bends on water surface making object under water aapears higher.

[@GopinathPoonjali]

1.Away from Normal. 2.Change in speed . 3.Yes it appears be shallow because of refraction of light.

[@harisankarlal6895]

Q1: When light travels from water to air, it bends away from the normal. Q2: The cause of refraction of light is the change in the speed of light when it enters the second medium. Q3: Yes. A swimming pool does appear to be shallow when viewed normally because refracted ray of light after reflecting from the bottom of the pool changes its direction on entering the first medium which is air.

[@halfaheartgaming6195]

Someone's in 2024😅

[@RakeshYadav-ji4kc]

2024

[@vinayaka7738]

2024😅

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Me😅😅

[@jasonfrancis8181]

Right before exam 😂😂

[@mdnaseem6825]

Me

[@vilasinisharma27]

My physics teacher don't know how to teach and I thought I was really gonna fail my boards but I am glad that this teacher is on KZbin the style of teaching is very good ......

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2024 drop a like 😂❤🎉

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Who are watching in 2024

[@raghava74]

Mee too broh😂✌

[@nagrajbanjara2244]

Mi also bro

[@unicrnkitty9480]

Just finished watching it

[@LalitaKanoo]

Humans

[@ekshithsaigunakarpasala4391]

1)away from the normal 2)the cause for the bending of light is the change in the speed of light 3)yes

[@chauhanrudrapeicaiss9748]

1)Away from the normal 2). The speed of light changes when it passes through different mediums . And according to the law of refraction light bends away from the normal when increased in speed and away from normal when slower 3) Yes as the water in the pool is optically denser and thus leading to a decrease in the speed of the light which then ultimately leads to the bending of light towards the normal . But light reflected to our eyes is not bent thus we see a shallower pool . Am I correct ? Question: is refraction used to in our daily lives ?

[@pinkirajput7237]

Ans 1 it moves away from the normal Ans 2 speed is changed Ans3 yes

[@karthikkadaru4606]

I might be wrong but I think the ans for the 2nd question is the change in the medium

[@GuguGwebu]

It's so helpful even 2024😊

[@Bob_Goat]

Yeaaaaa

[@arctic215]

1. Away from normal. 2. Change in speed of light. 3. No because it's viewed normally. Sir; please reply if all are correct.

[@ManochaAcademy]

Super!! All are correct :)

[@gauravmehrotra6315]

Answers of the top 3 questions!! 1. Since water is optically denser than air, light will move away from the normal. 2. The cause of Refraction of light is the change in speed and material. 3. Yes, it appears shallow due to the Refraction of light!! Thanks a lot for this video, sir 🙏🏻

[@zahidhameed2076]

ur right😊

[@satyajeetdas1535]

1.bends away from normal 2.diffrence in the density of the medium through which light is traveling through 3.yes,due to refraction of light

[@slowpy_.]

Correct brother

[@manojjoshi4110]

When light travels from water to air the light will bend away from the normal as water is a denser medium than air so as soon as the the light it reaches in the rarer medium it bends away from the normal 2- the cause of refraction of light is speed of the light as we know speed of light is different in different different mediums during which the different speed of light in different mediums result in the refraction of light. 3- yes the pool appears Shallow as we look from the above this is because of the refraction off the light All three ans Let me know right or wrong???

[@technologytobeloved4003]

1) Away from normal 2) Change in the speed 3) Yes

[@susheel91]

Who all legends are watching this before the day of exam 👇

[@RiyaRani-f1q]

😂😂

[@GoDxRaGe009]

Ans. 1- It bends away from normal Ans. 2- Cause of refraction of light is that the speed of light is different in different molecules. Ans. 3- Yes pool appear to be shallow because of refraction of light

[@maccaesar2250]

1.it will bend away from the normal because the ray of light is from a denser medium to a less medium, making the angle of refraction larger than the angle of incident 2.The difference in the speed of light in different media of different densities. 3.yes it appears shallower because there is a change in the speed of light as it travels from air which is denser than water in the pool...

[@sweetyroy231]

1.) Water is more denser than air, so when light travels from a denser medium to a rarer medium, it bends away from the normal. Hence, when light ray travels from water to air, it bends away from the normal. 2.) Change on speed causes change in the direction. This is refraction 3.) Yes the pool appears to be shallow when viewed normally. Sir here are my answers 👆🏻. Are they correct sir? Thank you sir for the awesome video..😊

[@moudgitsidali738]

They are correct son accept the question 3

[@annrose6765]

If it's npbiewed normally then it doesn't appear shallow no?

[@FeridaMohammed-rf4xd]

1.)Away from the normal 2.)Change in speed of light 💡 3.)Yes it appears shallower when views from above

[@SUDHEERKUMAR-xt1zo]

1A. it bends away from normal 2A. changes the speed of light 3A. yes, because of refraction

[@amaianime1293]

1) away from the normal 2) the density of a medium 3) no the pool appears to be deep due to the refraction

[@kiraneducationalacademy9006]

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[@keshabpradhan5964]

1- away from the normal 2- change in speed of light causes light to bend 3- Yes 👍

[@p.akshitha588]

Top 3 questions answers 1.Away from the normal 2.Due to the change of speed of light refraction takes place 3. Yes As we look into a pool, our eyes now absorb light from a denser medium(water) in comparison to a rarer medium(air) . Hence, the light gets refracted and the pool appears shallow

[@yoganandar995]

sir your explantion is really outstanding 😎 I think U deserve oscar award👍👍

[@ManochaAcademy]

Wow, thanks

[@malaikarajput1744]

1) away from normal,2)the light bend when it travel from rate to denser or denser to rare3)no when light passes it will look shallow

[@malaikarajput1744]

@manochar academy reply plss

[@devabushanrao2794]

Q1: the light travels away from the normal since it is traveling from an optically densar medium to optically rarer medium. Q2: The cause of refraction of is the change of the speed of the light when it enters into different medium( different optical density). Q3:No, the pool doesn't appear to be shallow as the refraction doesn't takes place in the case when it is viewed normally

[@ayrazee]

Actually 3) Refraction of light at the surface of the water makes swimming pools appear shallower than its actual depth when viewed from directly above

[@rehanmanzoor4198]

SIR YOUR TEACHING SKILLS ARE MAZING

[@ManochaAcademy]

Thanks a ton

[@anushkabhowmik8201]

What's mazing?

[@pragnap5139]

@@anushkabhowmik8201 I guess amazing short form

[@anushkabhowmik8201]

@@pragnap5139 well..God knows...I'm literally unfamiliar with these short forms

[@mikeyuchiha8797]

1) Light bends away from the normal. 2) Change in speed of light when light travels from one medium to another medium is the cause of refraction. 3)Yes. It appears to be shallow because of refraction of light.

[@soulgaming9622]

Sir you should join byjus as a teacher. Your teachering skills are just amazing!!! 😃

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Any one here in 2024

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You are waaaaaaaay better than my class physics teacher. Sending lots of respect from Egypt 🙏

[@ManochaAcademy]

Thanks for liking, Happy to help.

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I Love your videos 😊❤❤❤

[@nisfirchanh187]

Fun fact: The "magic trick" works only with a round glass, I tried using a square one and nothing happened.

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who are still watching this in 2024 👐🏽

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Who all are watching 2024😅😊 #Attendence

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Mee😅

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✋

[@pawnichopra846]

I understood everything......very nice teaching pattern

[@peterkyeremeh4416]

Question 1: Light will bend from the normal Question 2: There is a change in speed of light as it enters a different medium Question 3: Yes, you mentioned that in your speech

[@kartdwayson]

Bro which country are you

[@honeytwena1608]

1Q:- when light travel from water(denser) to air(rarer) it bends away from the normal. 2Q:-The main cause is when light travel from one medium to other medium, the speed(velocity)of light changes it leads to bending of light 3Q:Yes,pool appear shallow when viewed normally.

[@geofferyromany4634]

Thank you. Middle age male learning physics and chemistry at ordinary level at home with no teacher except youtube and no labs, thanks you very much. Headaches less.

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who else doing physics in quarentine?

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Me

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Meeeee!!

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Ur quarantine spelling is wrong, correct it,😂😂

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@@kartavyaverma2780 or just tell me politely man

[@Arhamkothari753]

A:1-The light will bend away from the normal. A:2-Refraction is caused by the change in speed of the light when it travels from a denser to rarer or rarer to denser medium. A:3-Yes,it's because of the refraction of light.

[@ManochaAcademy]

Very good!! Answers of Q1 and Q2 are correct :) Q3 By normally it means along the normal. So light will not bend. That's why pool does not appear shallow. Also try the Quiz for this video: www.manochaacademy.com/physics/light/l/refraction-of-light

[@cathydepatoy6615]

I Love you're videos @ManochaAcademy

[@cathydepatoy6615]

And you are the best. ❤❤❤

[@andrewmshila5067]

1.away from normal 2. light traveling from one medium to another thus cause bending 3.yes

[@muneebasiddique3557]

1). Light directs away from the normal 2). Light travelling in obliquely direction from one medium to another 3) no when we look normally, bending of light will not visible.... to observe it must look diagonally

[@zaeemgaming5090]

Even though he uploaded this video on 2018 its still highly active in 2022

[@deborupdas5326]

U r right

[@machahitheshkumarreddy4334]

Q1) right. Q2) due to changing of medium. Q3) yes.

[@lillyrozy1950]

Sir please take special class for 10 th class children in school after a long break iam not understanding anything in my school do special videos how to score good marks in physics take test and reveal ans in next video but plz take special care on us plz explain everything and every lesson in physics this is my humble request hope I will get a happy reply by u

[@aroxnav]

i agreee

[@beastwolf5636]

ANS:1= when the light travels fr denser to rarer the speed increases, and it would change its direction away from the normal ANS:2= the speed of the light changes in air=3 x 10 8 m/s and in water 2.8 x 10 8 m/s ANS:3 yes it appears to be shallow because of the refraction of light bends through towards normal Thx for you viedo 🤩

[@kusumchaudhari1315]

it is really very helpful for study and doubts.

[@ManochaAcademy]

Happy to help

[@lilsharx8560]

thanks sir you explained the best of all teachers i have ever met

[@ManochaAcademy]

Great to hear that you liked the video! Thanks :)

[@dhavanish]

Love the explanation had confusion for 1 day but not anymore best refraction Video

[@rekhasreelesh613]

Sir your way of teaching is very good now my daughter is able do learn everything Thanks a lot

[@ManochaAcademy]

It's my pleasure

[@tssaranlalbk7319]

But why the bending occurs only in oblique positions, if the velocity change bend the light then why don't the normal incident light bend, eventhough the velocity is changing?. Is that means the velocity change doesnot actually the core reason for refraction?🤷‍♂️🤔

[@sabithach2337]

Sir..... Please upload a video on TOTAL INTERNAL REFLECTION....

[@ravirk7315]

1.when light travels from water to air it bends away from the normal and speed 2. Change in speed of light when it enters from one medium to other medium and one should be transparent 3.yes due to refraction of light

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Manocha academy is better than byjus and vedantu academy. 😉

[@ManochaAcademy]

Glad to hear that.

[@meenukatial7455]

A1.) When light travels from water to air it bends away from the normal (angle i is less than angle r ) A2.) The cause of refraction of light is the change of speed of light in different mediums. A3.) Yes , the swimming pool appears to be shallower when viewed from the outside.

[@sunveen]

1. When light travels from a denser medium (water) to a rarer medium(Air) it refracts away from the normal 2.Reraction of light is occured because when a single ray of light is is exposed from one medium to another there will be a change in the speed of light and so when the speed of light is decreased and become slower the light bends. 3. Yes they do when we look at it from above it LOOKS shallower than it actually is.

[@rathnamahalakshmi570]

Sir, iam being a professor much impressed by your method of teaching... I wish your journey should pursue eternally And benefit infinite number of students

[@richaarya9964]

1- Its away from the normal 2- Change in speed of light 3- No, Because it viewed normally😊

[@sreeharidhra9002]

1.light bend away from the normal because light enters from water(denser medium) to air(rarer medium) 2.change in direction of light and change in speed of light 3.yes, because of refraction of light

[@sunnybunny7323]

1.Away form the normal line 2.When light enters form one medium to another medium it refracts 3.Yes,due to refraction .

[@rajoffficial6581]

Really sir u are the best teacher of every subject .in the world ..feel kara diya sir aapne .🙏

[@ManochaAcademy]

Thanks f0r liking

[@ganeshgummala1041]

1ans away from the normal 2ans refraction is formed when a light ray passes through to refractive indexes 3ans yes