Light in One Shot | Physics - Class 8th | Umang | Physics Wallah

[@suryanshKashyap-ul7gg]

Paisa school me de rahe hai Aur padhne you tube pe aa rahe hai 😁kitne great hai ham🙏

[@dotdotyt01]

Hamara sch to bilkul muft hai lekin GSS nahi hai

[@SupriyaSingh-e8v]

😂😂

[@geetashashikanth8121]

😂😂

[@bravegirlups]

Us ka matalab ye nahi hai😂

[@zax69]

​@@Vardhanraj893Arey chulbule uska mtlb h school Wale Paisa lete h par padhane ke naam pe 0 aur yaha free

[@killerboss6011]

School me iss chapter ko padhane me 4 din lage aur yaha ek one shot me hee clear ho jata h😂😂😂😂😂👍👍

[@LaxmidharaMartha-rs8rx]

School me teacher hasa kara,bata kaeke,sabal puchuke padhatehe to 4 din lagata he.aur unha sir sib padathe he aur kuchu nahi karate he

[@killerboss6011]

sir ab nach ke padhaenge kya samajhne ke liye bahot h👍👍👍

[@bharatshukla3636]

@@killerboss6011 Achha toh school me pura din physics padte ho ki sirf ek Baar?

[@Vaishnavi-i7m]

​@@killerboss6011Hmmvo to ha😅

[@kumkumkumari8635]

Class me shebh 40minute padhai jata hai

[@rashikarhade7122]

Periscope:- 32:59 Multiple image :- 37:01 Kaleidoscope:- 42:45 😊

[@vijaymishra9486]

periscope nahi regular hoga

[@Busybuzz-e5m]

​@@vijaymishra9486 Right 👍

[@Tripper22]

@@vijaymishra9486 SHUT UP MORONES VO TIME STAMP DE RHA H KI YHA SE PERISCOPE KA TOPIC SHURU H ANSWER NHI BTA RHA

[@ayushprakash1081]

000000000 0 0 0 0 0 00000000000000000000000000 0000000000002 0000000 0

[@kanchanmeshram1515]

26:45 Sir Please Use Dark Colors to write on bright background colors

[@a.k.rtechnicals8858]

Kash jab mai 8th me tha, tab aise teacher milte mujhe

[@abhivlog1076]

Kyun bhaiya ❤️ apne physic nhi padha tha .

[@a.k.rtechnicals8858]

@@abhivlog1076 are bro i am in 12th, mai to aise hi dekhne aa gya tha,btw I am a science student so i know this physics very well☺☺☺☺

[@NavneetKumar-de4lx]

Mujhe bhii yaar 😇😇

[@noname_xD_]

@@a.k.rtechnicals8858 mebi..😞

[@_Harekrishna_330]

Koi ni aab pdh lo

[@EYEPATCH12-mm1ib]

we need more teachers like them in our school too!!!

[@tanishkthakur-z3t]

Light in One Shot | Physics - Class 8th | Umang | Physics Wallah

[@NxtofAradhyaff]

23:12 hi sir Happy birthday 🎂🎈🎈🎈🎂🎈

[@tulshianand4613]

42:31 there are two parallel mirrors required for multiple image formation

[@ChessCheater-is2we]

Not multiple but infinite

[@bestdealsbyamit....propert762]

Images are formed by Regular Reflection [ 32:56 ]

[@ajisaarya8385]

T ka kare

[@faiqaanisa9639]

Yrr this teacher mind blowing ❤️♥️🥰

[@AbhishekSharma-kw9js]

Yes yaar

[@Its_shuail_nawaz]

Really yarr❤

[@Ang_uish]

O

[@vijaymishra9486]

8:27 speed of light 3*10^8m/sec speed of sound 332m/sec 17:27 ex of luminuos object is torch and non luminuous is paper 32:42 regular reflection 41:49 two mirrior

[@IfrahFayaz]

Speed of sound is 343 m/s

[@Heyyy____anuj]

​@@IfrahFayaz yes👍

[@rai24art6]

Thank you alok sir for easily clear this chapter

[@yadavsv680]

Um dj alok 🤘🤘🤣🤣😂

[@rai24art6]

@@yadavsv680 what do you mean

[@TheMonsterShorts7863]

Ye alakh sir nhi hai

[@oneshotgamer6427]

Easly nhi easily hota hai 🤣😂😂🤣😂

[@oneshotgamer6427]

😅😅😅🤣😂🤣🤣🤣🤣🤣😂😂😂😂

[@abhinavtheconqueror7]

3:48 A magical light who gives definitions. LoL 😅

[@Colouring_palette_]

41:48 we need minimum two mirror to form multiple no. Of image

[@ksblogger9974]

correct

[@Flash__is__live_0]

32:42 images are formed by regular reflection

[@uditjoshi1074]

Your smile is amazing I found this channel first time but now my class 8 is close to end and 9 to start😭😄😄🧑‍⚕️🧑‍⚕️🧑‍⚕️

[@pragyanmohapatra1487]

Only annuals left

[@SurajYadav-d8j]

😅😅😅😅😅😅

[@SurajYadav-d8j]

😅😅

[@omkar_watte]

Sir you're literally Saving life of students around the country 😂😂

[@sanjaybarik8078]

Hi

[@opticnewtella]

Doctors be like: bruh 💀

[@btsforever7953]

Absolutely 😂

[@_Cyber_Beast_]

🤣🤣

[@arnamawasthi5403]

Yes😂😂😂😂😂😂

[@gagankumarrahangdale7281]

Kash ese best brilliant teacher mere school me hote teachers should be like u the technique of explanation is really awesome 👍😎

[@AnnakBro]

❤Louis Braille was really such a great person 👏

[@reenaprasad3743]

Speed of Light - 3 x 10^8m/s Speed of Sound - 343m/s.

[@edit_with_KANISHK]

👍

[@A_M_gamer9646]

wrong answer speed of light is 300000 km/s

[@reenaprasad3743]

@@A_M_gamer9646 3*10^8 m/s = 300000 km/s.

[@sumankaswan7743]

Kese hua muje bhi samjao koi 😢

[@vandanak5918]

km nhi hota m hota hai @@reenaprasad3743

[@mumaintinegaming5973]

Students are never bored when they learn from physics wallah 😊😊😊😊

[@dharitrisarma2812]

Obviously bro..

[@priyalmangal7236]

I am about to sleep

[@ØM__PRINCE-VIP]

@@priyalmangal7236 ❤️❤️❤️❤️

[@imnotarnav]

YESSSSSSSSSSSSSSSSSSSSSS

[@ranusharma6687]

@@priyalmangal7236 so pls sleep

[@dimpalsingh7094]

Speed of light is 3×10 ^8❤ luminous like build and non luminous pen book door etc. Images are formed by regular reflection sir❤

[@dimpalsingh7094]

Number minimum is 2

[@AbhiKing-b5t]

Hello

[@arnavbehera6654]

32:52 Images are formed by (regular) reflection

[@SereneWinterSled-hf3qi]

Answer:To obtain multiple images, two or more mirrors are required. 41:44

[@Artist_Onima]

Q.What is a periscope ? Ans =It is a cylindrical pipe in which two plane mirrors are placed one at the bottom and the the other one at the top and when the object at the top reflects light and then falls on the 1st mirror and that reflection then again falls and meet the 2nd mirror at the bottom of the cylindrical pipe then the reflection of light of that object and then to our eyes , then only we can see that object which was not visible directly but through this we can see that object of cylindrical pipe with 2 plane mirrors one at the top and the other one at the bottom it makes a scope that scope is known as a periscope .

[@ManojKumar-th8yn]

Right

[@Sharanyaaaagrovesss]

😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂

[@Myvlog00782]

😢😅

[@pratishtha_009]

Itna bada😅

[@vasudhadwivedi]

32:46 Images are formed by Regular Reflection 42:05 Atleast 2

[@Mrrsoni21]

@@amboygamer8505 hi

[@mr__mayank6710]

Hi

[@SantoshKumar-gr1xh]

8:33 the speed of light I 299,792,458m/s,speed of sound is 343m/s

[@aryarai2214]

You are really great teacher of physics sir 👏 👍

[@shubhamtomar5682]

Apcosh

[@SubhalaxmiKampa]

Legends watching this before exam and in 2024

[@SubhalaxmiKampa]

Koi to like kardo

[@Tyson_2611]

Hi

[@krishnarashmi3872]

Done bro

[@swatikhot-pd6lc]

yes bro majaburia hai 2024🤣😃

[@tanishkthakur-z3t]

yes bhai

[@mlsaini6658]

Thank you sir 10 times excellent 👌👌 Very nice video

[@Divine_ishrat]

8:43 speed of light hai 299792458 m/s and speed of sound hai 343 m/s ❤

[@superiorx31]

1) Images are formed by regular reflection. 2) Two minimum number of mirrors are required for multimple image formation.

[@muskanomar5913]

17:27 Examples of luminous or non luminous are : - LUMINOUS : Sun , Bulb etc . NON LUMINOUS : pencil , Notebook etc .

[@MadhveshMishra-s8z]

Luminous=stars

[@enha4ever1050]

sir, I have a doubt, what does plane mean here? (22:45) 8:15 speed of light = 3 x 10 ^ 8 m/s speed of sound = 343 m/s 17:05 Luminous objects = Lights, Sun, or Stars Non-luminous objects = Cloth, Furniture, or Stationery 32:45 Regular 41:45 at least 2 mirrors are required to form multiple images

[@Darkbreak_Gaming]

Plane mean the surface that is reflecting the light like the plane mirror

[@adeebaashrafrather3905]

Wanna correct stars aren't luminous objects

[@Mohsin.Mushtaq]

​@@adeebaashrafrather3905stars are luminous objects . You have the wrong concept

[@AhsanUllah-bx7uy]

Speed of light 3/10'8

[@Kage11037]

In the second reflection law, which states that the normal, incident ray and reflected all lie in the same plane, plane refers to the dimension, so they all are in the same 2d or 3d dimension

[@NidhiSingh-ru3tr]

8:37 Speed of light=299792458m/sec 8:37 Speed of sound=343m/sec

[@supericonic04]

Legends watching 1 day before exam at 2x speed😂💀

[@sakshijha2574]

Yeah broooooo

[@MeeladFarooq]

O balay oy

[@JayaDixit-t9r]

Samajh Aya ya nhi, mujhe to nahi aya

[@pandeyskand]

i appreciate your honour

[@hiddenbadshah]

8:34 speed of light=3*10⁸ 8:35 ". ". sound=332m/s in air, 1450m/s in water and 5000m/s in solid.

[@angelyt1386]

17:25, Luminous object = Betelguese (A Supergiant star); Non-Luminous Object = Rocks, Stones. 32:45, Answer : 'regular'. 41:55, 2.

[@adityayadav175]

Hii

[@beastt2011]

​@@adityayadav175Yadav G 😂

[@Induswithme]

17:21 luminous - neutron star Non luminous - humon body

[@simranjot7157]

Speed of light - 3 × 10^8 m/s Speed of sound - 343 m/s

[@Fundaazgamer]

good

[@FRAKandanime74798]

@@Fundaazgamer which school

[@opticnewtella]

@@FRAKandanime74798 black death scool

[@FRAKandanime74798]

@@opticnewtella 🥱

[@mineeditz7542]

@@opticnewtella 🌚

[@jp_bhati_ytjodhpurplayer9852]

Example of Luminous object - electric bulb , candle , etc. Example of non luminous object - pillow , pen , etc.

[@anitamunde3021]

Luminous object -bulb Non luminous object-mirror ,pen

[@sudarshankumar7121]

Galat hai

[@sandeepdwivedi4927]

1:01:49 thank uuu..... Sir for helping us ...... ❤❤

[@mythicgreninja412]

17:28 example of luminous object- Bulb Example of non luminous object- Human

[@dipumishra5711]

Thank you for this much explanation Eg of luminous object is star Non luminous object is eraser Sir can i give human in eg of non luminous object?.

[@santohdevi8223]

Hi

[@sky-pz8xn]

Well, for your information , Stars are non luminous object because they don't emit light , they don't have their own light , the sun rays reflect it in our eyes . And yes we can give humans as an example of non luminous object

[@asrafatima7782]

​@@sky-pz8xn well for your information, humans do emit light but it is very low that cannot be seen by human eye , so they can be categorised as luminous And stars are luminous.

[@mlsaini6658]

Sir 2 minimum number of mirrors required for multiple image formation

[@r.rcreation3561]

Infinity

[@bhavyadagur9614]

Example of luminous are sun , fire 🔥, stars etc Non luminous are table , chairs , pen , pencil , etc

[@ashavlogs4512]

sun is a star only

[@abhisheknishad2148]

I 8t

[@abhisheknishad2148]

@@ashavlogs4512 hey

[@KarandeepSingh-oq5iv]

Yes you are right

[@muto2610]

@@petlove5738 they are luminous

[@Thequickartist]

8:32 Speed of light =300000 m/ sec 8:32 Speed of sound =343 m/ sec 17:47 Luminous = stars,sun, candle light 17:47 Non luminous = moon , earth, black board

[@takeasmile2103]

Aryan ko send kar do eisiki pic

[@the_vaibhav_jain_1834]

Speed of sound differ in different mediums. In air=340m/sec In water=1500m/sec In solid5000m/sec

[@affiliater20]

5000m/s nahi 3000m/s hota hai

[@rishikaa6769]

@@affiliater20 6000m/s hota hai

[@rudratiwari680]

👍

[@smokedits-live651]

@beluga yes

[@swaritbhai]

sir You the best teacher from whom I've learnt till now in my whole life😄😄❤❤

[@kanchanmeshram1515]

15:40 Sir Use Dark colors to write on white or yellow color background

[@StumbleNAG15k]

speed of sound is depended on that in which medium it is travelling 5000 in solid 1500 in liquid 340 in gas speed of light about 3 lakh km/s luminous object = stars non luminous object = human regular reflection as image fall on plane surface(mirrrors) 2 mirrors

[@THESONIGUY]

🙅🙅🙅🙅🙅🙅🙅 but corrrect

[@vikramkumar-nu9oq]

Sir apka lecture mujhe bahut pasand h

[@adityamaths829]

8:08 Speed of light- 3×10⁸m/s Speed of sound- 343m/s

[@akhtabsnetflixaccount4515]

how do you find please explain me

[@sanjaysingh-md3ki]

@@akhtabsnetflixaccount4515 its a fact

[@akhtabsnetflixaccount4515]

@@sanjaysingh-md3ki tnx

[@yadunandmahta4969]

Awesome lecture thanks 🙏🙏 sir 👍👍👍👍👍

[@grasyshahivlogs.5373]

I'm trying physics wallah first time 😊. And I was like oh wow that's awesome platform ❤ thank uhh physics wallah for this wonderful explanation ❤❤😊

[@grasyshahivlogs.5373]

😊😊😊😊😊

[@grasyshahivlogs.5373]

R you argreee

[@RAJNIKUMARI-ql5wr]

🎉🎉1❤🤬🤬🍌🍌🍌✋🍌💩

[@ae.Blinder]

​🧢😑 Improve ur grammar bro/sis

[@Akansha-q3y]

@@ae.Blinder chad bro

[@theshubham285]

For the very first time I fell love with physics ❤

[@PallaviSingh-lz8nn]

Yahh

[@theshubham285]

@@PallaviSingh-lz8nn I know 😅

[@neetupandey6077]

There are many examples of non luminous objects Thank you sir 🙏😁

[@shamstabrezalam5739]

nn

[@shamstabrezalam5739]

Non luminous is moon Luminous object is sun

[@darshnagolakiya6271]

8:22 Speed of light= 299 792 458 m / s speed of sound =

[@IASAditya-l3i]

42:28 The minimum number of mirrors required to multiple image formation is 2

[@usmanganishah6451]

Thank you sir, I understand very well what you read.

[@rekhabadala4499]

Mst padate h sir saari preparation ek ghante m hi ho jati h

[@kanaklatakumari5353]

LUMINOUS ☀️☀️⭐⭐🌩🌩🔥🔥

[@Tabletenniswithpranay]

Sir bada acche se samaj aa raha he or notes itna easily mil taha he qya baat kare aab alok sir ki

[@Arman_quotes_official]

Sabse bakwaas teacher h

[@farhinjangaria3481]

Tommorow is my exam and i am full preped for exam ... Thanks sir ... U r teaching to good 👍 On e again thanks sir ❤️

[@noobrush5490]

8:34 speed of light=3,00,000 m/s or 300 km/s and speed of sound=343 m/s 17:15 luminous object - star non luminous - planets 32:40 images are formed by regular reflection 41:47 the minimum number of mirror required to form multiple image is 2

[@Ashu_MM]

School me kash ase teachers hote ❤

[@frosterplayz5944]

no wa i dont want this teacher i only want ritik sir. Ritik sir is the best than this sir ok

[@i.rprateek]

17:48 1⃣ Example of luminous= Bulbs💡, lamp🏮🛋etc 2⃣ Example of non-luminous= pens🖋✍, books 📚📙etc.

[@rehanaqadir3203]

No Bulb 💡is not a luminous source because it emits light only when electric current 🔌 is given to it Otherwise it does not produces any form of light (by any own process)

[@AijazAhmad-zh5me]

Luminous object • Sun 🌞 • Candle 🕯️ • Star ⭐ Non. Luminous object • Moon 🌝 •Chair 🪑 •Pencil ✏️

[@riyataank8498]

32:25 IMAGES ARE FORMED BY REGULAR REFLECTION 41:54 MINIMUM 2 MIRORS ARE REQUIRED TO FORM A MULTIPLE IMAGES

[@anjanaguha44]

Speed of light=3×10^8m/s Speed of sound = 343m/s Luminous object - 🔥 fly Non-luminous object - ✏️ , 📖

[@studywithmilubilu460]

1) speed of light - 3×10(8)m/s 2) luminous - Star, Non luminous- chair 3) Regular mirror ( Plane mirror) 4) 4 mirrors Thankyou ☺️

[@noname_xD_]

1st ms-¹ Ya K/h dalu..

[@noname_xD_]

@@studywithmilubilu460 Si unit..🙂

[@PushpendraKumar-su7vm]

Yeah

[@PushpendraKumar-su7vm]

And speed of sound= 330m/s

[@m.farhan1750]

Spelling of plane is wrong

[@brosgamer5930]

7:22 luminous object. -------- flashlight Non luminous object --------book

[@knowledgetimebynishitraj2709]

Sir, very good explanation. Now I'm totally prepared for my physics exam.

[@LearnWithUS1629]

Example luminous - fire,candle flame Non luminous - pen pencil copy L

[@Truthneeded]

Maje sure being teacher is nice but teacher as a teacher is a pride in own self .... Respect for this man 🙏🙏🙏

[@harshitarai1204]

17:46 luminous object = star ⭐

[@avishsharma2132]

Images are formed by regular reflection 👍👍

[@lavendarfever_YT]

😁i really really appericiate your effort, sir. youre the best teacher🤩❤

[@ankitasingh9685]

17:43 Example 1 of luminous object-heater 17:43 Example 1 of non luminous object-cricket bat

[@janmejaykataraji9080]

Thanks sir to explain this chapter we can understand easily thanks for pw launched this batch in free of cost

[@Disco_world]

30:38 sir ek reflected Ray chut gya hai

[@mythicgreninja412]

32:53 Images are formed by regular reflection

[@Vivekmahato922]

Speed of light=3 * 10^8m/s Speed of sound at 15°c is 340 m/s

[@Isaac-fp]

Noice

[@Jujutsukaisen300]

​@@Isaac-fp it's nice not noice😅

[@knowledgejuntion]

In which medium

[@c6rajat704]

every medium@@knowledgejuntion

[@malro14]

@@Jujutsukaisen300 bro u can't understand sarcasm

[@Nischay-t1n]

8:34 speed of light - 3*10^8 8:35 speed of sound -340m/s

[@noormuhammadbaba6791]

Speed of sound 343 m/s or 0.343 km/s

[@bhatsalim8008]

Sir, you are absolute legend Thank you a lot

[@aryangamer9997]

😮 6:33

[@VishalTadmali]

Sir aap bahut acche hai ❤

[@vineetapandey7977]

Sound have different speed in different medium Speed in air =330m/s Speed in water=1500m/s Speed in Steel=6000m/s

[@BlackPanther-ox7dq]

But sir in periscope topic you have told that the light ray passes through the object so the object shot be luminous? If yes so if the object is non luminous so what we have to do ?

[@soniaagupta8824]

light can also be reflected. you can even see a pen in a plane mirror and it is non luminous.there is no compulsion for the object to be luminous

[@BlackPanther-ox7dq]

Thanks 👍

[@Akash_18745]

When the light of any luminous object will fall on non luminous object then the light will reflect and then we can see the non luminous object.

[@kpsingh3209]

@@soniaagupta8824 I have a doubt ....... Please clear it .......While teaching the topic reflected ray can be reflected again,In the topic of Periscope you said that the ray that is coming from the object to the first mirror is the Incident ray ......but how is this possible in the case of non-luminous object ?? I wanna say that the ray that is coming from the light source to the object is the incident ray while the ray that falls on the mirror after getting reflected from the object should be the reflected ray .....but you said the same in the example of hair cutting that the ray falling from our face to mirror is Incident ray but it should be reflected ray as first the light fell on our face from the light source and that ray should be incident and the ray that fell on the mirror after getting reflected from our face should be reflected ray.......Please help I am confused 😰, I don't know if I am able to express my doubt and what i want to say clearly or not......

[@kpsingh3209]

I commented this but i guess no one had seen this so can u please tell cause i think my doubt is similar to this one

[@shwetay250]

1. Example of luminous object - star and firefly Example of non luminous object - pen and paper

[@BRoUJisOP]

Star is not luminous

[@noinamei]

@@BRoUJisOP ofc they are

[@PrakashKumar-sk3qt]

17:26 luminous object example torch and non luminous example fan☺️

[@Ananyashrma2010]

Speed of light=3×10⁸m/s Speed of sound=343m/s Luminous object - candles Non luminous object - table Maximum 2 mirrors are required for image formation

[@garima_sonii]

Luminous object sun or non luminous object moon ho sakta he

[@bodhraj-r3v]

star bhi luminous object hai aur sir ne kaha tha ki jo examples mana khi hain bo nhi batani hai toh isliye table bhi sahi hai

[@garima_sonii]

@@bodhraj-r3v ok~♡ bhiya/didi

[@Ananyashrma2010]

@@garima_sonii bilkul ho sakta hai

[@Ananyashrma2010]

@@bodhraj-r3v Ab mene correct kar diya hai

[@TECHnology1qaz]

29:43 SIR padhane ka tarika thoda causal hai 😅

[@shreyansinha7706]

My parents wouldn't let me leave school even though sir is 10 times better than school teachers🥲

[@maleehakhan9347]

School teachers r school teacher no matter how much the other sources are great

[@PrabhatSingh-qh8fb]

Because students are active leaners therefore knowledge can be only construct through physical interaction hence schools are compulsory for each and every Student

[@shreyansinha7706]

@@PrabhatSingh-qh8fb Absolutely

[@bhaiyalalverma2386]

@@PrabhatSingh-qh8fb exactly 👍🤜🤛

[@ruuchisaini2338]

@@PrabhatSingh-qh8fb only compulsory till 8th

[@ODACLASS-d5u]

47:20 ye wala experiment Maine 3rd class mein Kiya tha Us samay Maine galti se mirror WATER SE BHARI HUI BOWL MEIN drop kar diya tha ❤ mujhe ye aaj bhi yaad hai tab Wall pe rainbow 🌈 form ho rha tha😊

[@rachityadav783]

17.45 luminous object =led bulb and non luminous object=radium

[@shampabiswassarkar4247]

41:43 Question. What is the minimum number of mirrors required for multiple image formation? And. 2(two)😸😸

[@rafatfatima5906]

Yes brother your answer is right

[@suniltripathi3770]

p.w 🎉🎉 is not an group its an emotion❤❤

[@vijaypratapsingh9557]

Hello

[@harsh_1654]

Thank you so much sir ❤️ for giving your great time on we noob students ❤

[@Ra_-ini]

•Luminous-sun, bulb . •Non luminous - book 📚, 🖋️ pens. •Image is formed by REGULAR reflection. •at least two mirror. 😊❤🎉

[@aman_singh713]

Great🎉

[@Ra_-ini]

@@aman_singh713 thank you ☺️😊

[@mahaveeryadav4630]

Speed of light is 3×10^8m/s and sound is 343 m/s 😊😊