Dispersion of Light : CBSE Class 10 Science | Toppr Study

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Dispersion of Light : CBSE Class 10 Science | Toppr Study. In today's video, Dispersion of Light from (CBSE Class 10 Science) Let's watch this amazing topic for your effective Board Exam - Science Preparation with proper explanation by your favorite teacher. In this session, you will find Tips, Tricks, and Strategies in detail to score full marks in class 10 Science. So, Don't Miss It!!
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In this video of CBSE class 10 Science, we are going to discuss the dispersion of light, the dispersion of light, the composition of light, how white light is formed, why we see the rainbow after rainfall.
Topics covered :
0:18 - Formation of White Light
2:01 - Seven different colors VIBGYOR
2:53 - Prism
3:55 - Sequence of Color(Reflected Light)
5:00 - Spectrum of White Light
5:52 - Deviation - Min & Max
7:04 - Recombination
8:10 - Rainbow
Dispersion of Light
Newton proved that white light is made up of 7 colors namely VIBGYOR. He proved it by using a glass prism.
When a beam of white light is passed through a glass prism, it split's up into a band of colors called spectrum. This phenomenon is called the dispersion of white light.
The spectrum of white light has the colors violet, indigo, blue, green, yellow, orange and red (VIBGYOR). The sequence of seven colors obtained from the dispersion of white light is called the spectrum of white light.
So, why do we get these colors?
Different colors of light bend through different angles with respect to the incident ray, as they pass through a prism(on refraction). The red light bends the least while the violet light bends the most. Thus the rays of each color emerge along different paths and thus become distinct.
Recomposition of light
Issac Newton was the first to use a glass prism to obtain the spectrum of sunlight. He tried to split the colors of the spectrum of white light further by using another similar prism. However, he could not get any more colors. He then placed a second identical prism in an inverted position with respect to the first prism.
This allowed all the colors of the spectrum to pass through the second prism. He found a beam of white light emerging from the other side of the second prism. This observation gave Newton the idea that the sunlight is made up of seven colors. This phenomenon is known as the Recomposition of light.
Formation of Rainbow
Rainbows are generally formed after rains. It is a concentric colored circular arc in the sky when the sun rays fall on raindrops during or after a shower. The small droplets of rainwater which remain suspended in the air just after the rains act as a prism.
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Let us know your doubts regarding today's topic "Dispersion of Light : CBSE Class 10 Science | Toppr Study" in the comment below 👇 we will respond to solve your doubts asap. See you guys in the ⏭️ next surprising session! Till then stay tuned...

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[@xavier4059]

DOUBT : after the sun ray enters the water droplates each droplate reflects its own VIBGYOR colours in its own direction then how is a BIG CURVE RAINBOW IS FORMED'

[@aaravsharma1824]

Anybody know the answer ???

[@21naseeruddinkhaja3]

Good question

[@SiddhiSrivastavaK]

Study about critical angle and total internal reflection

[@techknowledgea2facts562]

Because the are too many droplets to form big curve rainbow 🙂

[@v_a_s_u078]

Through refraction dispersion and atmospheric refraction rain bow is formed

[@Pooja.S11]

Amazing video in the whole world of you tube I wish that teacher in my school

[@kavyasamazingvideo8002]

Ye kucch jyada hogya... 🙄

[@_namansoni108_]

Point to be noted

[@arnavkashyap5110]

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Your teaching style is so unique.... I thought no one can explain as well as you

[@thescienceofcosmos9223]

What you mean..?? No one..??

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[@TopprStudy]

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🤣🤣🤣He doesn't know how to teach. Only telling students

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Love you sir..... Fabulous...

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[@KashviDixit18]

your animations are really wonderful

[@SurendraKumar-ey7nq]

Barish ke vakt road par jab Pani reh jata h to use dekhne par rainbow colours dikhte h this was also the example of dispersion or not? Tell me

[@arunakumarjena4147]

Really it was a bright and colourful explanation which made us understand easily.Thank you sir.👏👏👍👍👍

[@adithyaramgiti5304]

Good sid

[@sumanrani393]

Yes you are right

[@ahsanulhaq7783]

Yeah!

[@nkclub1716]

Your teaching manners is different from other teacher

[@vinaydhonchak]

sir...why recombination does not happen in water droplets

[@bangtansaranghae7]

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[@rekharani9432]

Armies are always lucky honey

[@bangtansaranghae7]

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[@Neuro_TechG]

Doubt- When the white light enters the water droplet, why it gets bounced back from the inner surface and forms spectrum. As the raindrop is transparent, so don't u think that the white light should go straight without bouncing. And in a glass prism, the white light also goes straight and forms spectrum without bouncing.

[@e-learningaccountsandbusin6529]

Your teaching style is quite better then other teachers on youtube....keep it up...this helps me a lot in my studies

[@letslearneverydaysomething6401]

1. Splitting of white light into 7 colours is called dispersion of light. 2. White light composed of 7 colours. 3. The band of 7 colours is called spectrum. 4. When rain happening then few raindrops suspend on air and act as a prism than white light option goes through it then it act as a prism dispersion happened.

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[@bad__boy8165]

Actually sun raw are weite

[@paulyoyakkim4523]

Sir , ur teaching method is so easy and is swift to understand....i am perspicuous now with most of my tough concepts ...Thanking you

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[@ramandeepsingh2739]

Teaching is superb. But have a confusion. Why rainbow is always formed in curved shape?

[@TopprStudy]

Because all the angles in the water drop have to be just right for the drop to send some sunlight to you (standing on the ground). So, with the sun behind you, only those water droplets that have the same angle formed by you, the drop, and the sun. Now, we hope you have no confusion.

[@suryanshuroy]

6:08

[@NitinGupta-sd9ox]

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Nitin Gupta

[@modadugulokesh1111]

Sir why rainbow forms like a parabola? And why dispersion takes place only in a prism not in any transparent medium like glass etc.please clear my doubts sir

[@Jiana_130_0]

Didnt met my expectation. ..you only picked one water droplets,in real there are many air droplets in atmosphere therefore it is also possible that the other water droplets can acts as 2nd prism and again make the vibgyor into white light but it never really happens ..

[@richajalan4635]

hi sir u expalin everything very nicely but i have a question... ki why does the the spectrum which is formed inside the water droplet (rainbow formation) gets reflected again inside the droplet and not pass straight through the droplet?

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You ganda

[@nagabhushansthavarmath7999]

No one noticed his reverse writing skills.

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The screen is mirrored bro Niether he is lefty Nor he is writing mirrored handwriting

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The govt should give u a special reward for this amazing methodology and for this advancement of the study for all the students...for futher development

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the editor should get an Oscar award for editing

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I used to teach students.. Whenever I am having doubt, just searching for dron study and then immediately able to understand everything.. Love ❤ from jammu...

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[@krantipawar4865]

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[@panditjikabetavns9600]

Yes

[@anjalitripathi186]

Jaise leisure light me red colour ki light jala kar prism me pass karenge tab kya hoga and black light ko pass karenge tab kaise show hoga prism me

[@gayatrisingh4024]

Jaise droplet me ye hit hoke hame "VIBGYOR" dikhate h to prism me kyu nhi. Prism me to Ulta sequence banke nikal ta h na lekin water droplet me nhi Pls clear my doubt

[@TopprStudy]

Hi Shayna, we can say as, Both the patterns are same actually but just inverted that's orientation difference only, no any other effect. both undergo the same phenomenon of dispersion.

[@danceacademy4321]

Sir plz one video on digestion of water

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Wow you are the first teacher who teach us all chapter by summatry

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Hi Tahseen Yaman, thanks for appreciating our work. For more videos like this please watch here, For Animated Science, kzbin.info/aero/PLKb9HOyS0VGR-_2amYZ6nsWhWySlgaMvU And for Animated Maths, kzbin.info/aero/PLKb9HOyS0VGRoxfORxAATBvjkj3MQzh1r For Animated Social Science, kzbin.info/aero/PLKb9HOyS0VGR4cHRxvJhDtWj0GGW7gluD Or for all the full videos and full chapters please contact us at 8287971571 or 0261-4890016.

[@KamranKhan-hv9nw]

1. Why always rainbow are curved ? 2. Why does rainbow always rise high? - you said in this video water drops work just like a prism but they are not only located on height they are near us also. Can you explain this?please sir

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Sir ko 21 topo ki salami🙋

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Thanks, good one.

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Vaery good. Sir😍😍😍

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Which software you use to edit

[@mariyamsiddiqui3282]

I never found a teacher like u .. great sir

[@TopprStudy]

Thank you so much, Rais Ahmad. For more videos like this please watch here, For science, kzbin.info/aero/PLKb9HOyS0VGR-_2amYZ6nsWhWySlgaMvU And for maths, kzbin.info/aero/PLKb9HOyS0VGRoxfORxAATBvjkj3MQzh1r For social science, kzbin.info/aero/PLKb9HOyS0VGR4cHRxvJhDtWj0GGW7gluD Or for all the full videos and full chapters please contact us at 8287971571 or 0261-4890016.

[@PranitMahapatra_]

Ye

[@vijayam8094]

Sir why rainbow formed only in u shape and why only 1 rainbow forms?

[@imposter165]

But "Why the Rambo is in handle shape"🤔🤔🤔

[@Dr.GulMuhammad]

Do and does are the helping verb of present. Do afix with the plural noun , but the 'I' singular how that does with it. Can you explain that. Thanks

[@RajKumar-cq4yo]

🙏 sir kitna aacha gyan de raha hai aur hamme se koi video ko dislike Kar raha hai vidya ko mahatva nahi de raha hai toh ye to galat hai na ,sab is video ko like kare aur sir ko support kare #dronstudy

[@GaneshKumar-kr1md]

Sir ya ouestion batana please The cause of dispersion of light is..??? A) all the colors of light travel with the speed more than the speed of light B) all the colors have different angles of deviation C) all the colors do not travel with the same speed of light

[@guptajislesson2574]

Your explanation is very excellent , We can't understand chemistry So, I wish you also make videos of chemistry part for all students of 10th you are the best teacher 🙏

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[@asifshorts5610]

@@TopprStudy thanks

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You are one of the best teacher in the world....👏👏👏👏 Your way of teaching amazing...!!! Thank you sir....and keep it up...!!

[@amandeeproy3879]

Bless you 💞

[@trendingreels7810]

sir,u re just like my science teacher because both are like bro

[@i_amit_kar]

Hii Simran!!

[@mastermindmourya1312]

Hii simran

[@cricketfan620]

Sir why we can not see seven colours which nacked eyes and only see with prism

[@PramodKumar-mh5bb]

Thnx for making learning much more interesting..........ur words hits the brain.... 😇😇

[@RahulKumar-cs9wg]

Sir red light ka deviation sbse kam kyun hua..?? Plz answer

[@VishalGupta-dn5dp]

Red light optical denser hai isliye

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Wow yaar , sir your teaching style is one of the best ,unique

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Niharika, nice to see that you liked it. thanks. spread our channel to others to inspire us to make more and more content.

[@arshsaifi8318]

Awesome

[@NusratJahan-bo4no]

Sir I have a question . Sir, why in rainbow 🌈 has made only in spherical shape why not in other shape like rectangular , square ect..

[@Beastgaming-ny6hj]

Brilliant 👌 explanation....I understood each and everything very easily thanks a lot... keep it up

[@sagarnakoti4845]

Why we see rainbow in a bow shape if light travell in stright line?

[@shreyakhandelwalcreation7465]

Respected Sir...all your lectures are amazing..One important reason for loving these lectures is that you are visualising every concept and phenomenon amazingly to make everything interesting for us to learn them quickly..Thanks a lot Sir🙏🙏🙏

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Thank you so much, Shreya for such great words.... Keep Watching Keep Learning. also, share our channel with others so that we can reach more students. Happy Learning...

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@@TopprStudy Sure Sir🙏.I would be happy to do so...

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Thank you my best teacher I like this type of study👍👍👍...............

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Some teachers were god gifted and you are one of them Thanks sir that you teach us

[@toon_edittzz01]

Is Rainbow appears in the afternoon..?

[@dynamicworth8769]

Studies couldn't have been easier for me than this...Thanks Sir

[@TopprStudy]

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[@ayandeepbora1268]

@@TopprStudy thanks

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Sir your teaching style is very unique

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Osm sir your explaination is perfect I understood very perfectly ... Thank you so much I will always support you sir

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[@avishekaarav1401]

your explaination is very helpful for all students

[@rajkumarsingh-nh2og]

sir your teaching style and your body language is soo prefect so i requested you to upload more videos( मेरे school के सभी teachers ने ईस video को देखे और बोले कि you are the real teacher in the world)

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Hello Rajkumar, this is just a demo video for full video you need to buy this course. Please call on 8287971571 or 0261-4890016.

[@bandanaswain7483]

No one birth in this world like this teacher thank you Dr niten agrwal

[@mrvivek3608]

Sir how rain drop acts as prism as it is in the shape of oval....

[@sukleshchahar8843]

It's not according to shape it is according to its property acts as transparent

[@mrvivek3608]

@@sukleshchahar8843 then what is the property of water?

[@shreyakumari5112]

Sir your practically explanation is a very easy method

[@abhayrajgupta5534]

is the incident ray is parallel to emergent ray when two prism are inverted

[@TopprStudy]

Yes, incident ray is parallel to emergent ray when two prisms are inverted.

[@abhayrajgupta5534]

THANKS

[@gouthampurohit5825]

In the droplet after refraction Violet light is at the top but in rainbow it's quite opposite ??please reply

[@minakshidhadse4024]

Amazing teaching sir 👌 Brilliant keep it up 🙂👍

[@TopprStudy]

"Keep watching the channel for more exciting content and for updates on live sessions join the telegram: bit.ly/TopprStudy Also, check out our playlist: bit.ly/33VFX0k"

[@iramnaz4619]

Hello sir prism Agr same rkhen sidha 2nd one b , tou b kiya white light hi emit hogi ??

[@ashrafjung809]

wow

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To see your videos, I'm sure that I'll get 90+% in my boards which are starts from 27 February. Thank you so much sir. You are the unique teacher in this whole world and KZbin too..!!

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😎😎 yo bro bade hoshiyar ho

[@Aryanraj-jf3xg]

wow sir you are great perfectly remember that

[@TopprStudy]

Thanks, Aryan,.,

[@BhumiGuptathC]

Sir jaise apne dispersion ki definition di usme apne kaha Ki woh phenomenon jisme white light spilt hoti h swven different colour main in glass prism or any other object toh kya glass slab main bhi yeh hota h

[@jassimadahar7338]

thanks sir u r a great teacher... ur way of teaching is great

[@muskangupta1908]

Sir I have an doubt that ...how a small rain drop ..are dispersed in a big rainbow..??

[@studykit2923]

Bio ke videos bhi dalo...................

[@saritakaithal5640]

Yes..

[@ramurajput7199]

Sir your visualisation explanation is amazing you teach us very amazing

[@masoodalam2108]

May u study geography like that.... please sir

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[@darkgaming3588]

Sir agar 7 colour Mil ke white light bna te hai toh fir sun ki light yellow kyuu

[@roshnisoni359]

Tqsm for teaching us.. U r the really best teacher nd teach style was so simple nd we r understand.. Kal mara exam h sir. Tq

[@TopprStudy]

Glad to see that you like it, Roshni Soni. Keep watching & share with others too.

[@prakashshukla3143]

Sir yourteaching is amazing, fabolous , super attractive, ur world s best explanatior great sir 👍👍👍👍👍👍👍i m ur subscriber best teacher

[@Zapper_7]

Recombination does not act on water droplets sir? Btw Great teaching... No words to describe how good you are..

[@munmunbhattacharya1382]

Water droplets aren't inverted

[@vira9991]

Hii sir I have a question,i.e. Why that water droplet has shown reflection inside it? Please reply sir......

[@thewhistlingboy1545]

Sir your teaching style and animated figures can make undrstnd to anyone...Thnx for the videos Sir

[@FaisalAli-mj7oh]

But water droplet is transparent, how does it reflects after reflection

[@TopprStudy]

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[@Shivbaba_0001]

plz make me understand the refraction of light through glass prism by an animated video 🤔🎥

[@s.filming9433]

Why the white light not refracted from the raindrops like a prism?

[@mohdraashid2752]

Sir which software are u using Plz tell Great teaching

[@vijyakshrivastav6457]

You are good but i have one question that if the Water drops are changing one simple light into the 7 colours but as you say that many water droops are their in atmosphere so why other drops of water are not changing the 7 coloures into one simple light

[@rabit...4576]

This is how science should be thought in every school perfect way of teaching 🙌 keep going... let India grow🧡💟💚

[@TopprStudy]

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[@srinivas12394]

Doubt Water droplet acts as a prism Prism allows the white light to pass through it Then why does the water droplets reflect the light and still they are same dispersed

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kaash mujhe bachpan mian ese parhaya gaya hota toh aaj main docto hota. Vey well done.

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Aiwe ni banjate doc tumhari Age k baki k bande doc kaise bangye it's all about hardwork determination and intrest

[@shubhambhai7841]

Really

[@zaman-ej9bq]

Thanks for your sweet knowledge Sawal ye hain kay jab rainbow baan jata hain to jab jab barish hote hai ye rainbow lazmi bn jata hai. ..... Hamay to kabe kabar dekhaye deta hai rainbow ... Logic kya hai barishen ziada hote hai Rainbow kabe kabe.... Ya hota hai but sun ke waja say jis side pay rainbow bn jata hai es waja say hamay dekhaye nahe deta ?

[@AmitKumardos]

Great lecture sir

[@RajuKumar-zw6dl]

Sir ,when the white light of any other objects fall on the prism why white light split into seven colours

[@rosegaming1873]

Aap ki baat hi alg hai sir what a great style of teaching

[@jagriticreative7643]

What is refraction of light and how is it helpful to understand the dispersion of light