day-1bishopscottboysschool.com/en/wp-content/uploads/2020/06/...3. define dispersion of light and...

STUDY COURSE MATERIAL

PHYSICS

SESSION-2020-21

CLASS- X

CHAPTER :- 11 - LIGHT : HUMAN EYE AND THE COLOURFUL WORLD ( DISPERSION AND SCATTERING )

DAY-1

NCERT MATERIAL

http://ncert.nic.in/textbook/textbook.htm

TEACHING MATERIAL :-

PRISM


PPT LINK :-

Link:-1

https://www.slideshare.net/mobile/UtkarshIshwar/light-human-eye-and-the-colourful-world-63211198

Link:-2

https://www.slideshare.net/mobile/aditya315/human-eye-and-the-colourful-world

VIDEO LINK :-



Link:-1

https://youtu.be/Q-5dx2IZ4fQ

Link:-2

https://youtu.be/9MwE9PqnhnI

VIDEO ( MUST WATCH ) :-

Link:-1

https://www.khanacademy.org/science/in-in-class10th-physics/in-in-the-human-eye-and-the-colourful-world

ONLINE STUDY MATERIAL :-

Link:-1

https://www.learncbse.in/human-eye-and-colourful-world-cbse-notes-for-class-10-science/

Link :- 2

https://www.askiitians.com/revision-notes/class-10-science/the-human-eye-and-the-colourful-world/

EXPERIMENT :-

NCERT LINK :-

http://www.ncert.nic.in/exemplar/labmanuals.html


https://youtu.be/S3PiJ0PQghc

ASSIGNMENTS :-

Answer the following questions :-

1. What is a prism ?

2. Which phenomenon of light occurs , when light passes through a prism ?

3. Define angle of deviation and draw a ray diagram to represent the angle of deviation through a prism.Also represent the following in the diagram :-

l. Incident ray lV. Angle of incidence

https://youtu.be/5xqPHfN6Afw

https://youtu.be/VIiw0vR8h_E




https://www.askiitians.com/revision-notes/class-10-science/the-human-eye-and-the-colourful-world



ll. Refracted ray V. Angle of Emergence

lll. Emergent ray

3. Define Dispersion of light and show the dispersion of white light through a glass prism.

4. Name the different colour of in the spectrum of when dispersion of white light occurs through a glass prism.

DAY-2

NCERT MATERIAL



PPT LINK :-

Link:-1


Link:-2


VIDEO LINK :-

Link:-1

https://youtu.be/OK7WnsDM1og

Link:-2

https://youtu.be/s5VzyQ3XPHA


Link:-1



Link:-1


Link :- 2


EXPERIMENT :-

NCERT LINK :-



LINK :-


ASSIGNMENTS :-

Answer the following questions :-

1. Define total internal reflection. What are the necessary conditions for total internal reflection ( TIR) ?

2. What do you mean by a rainbow? Write a short note on the formation of a rainbow.

3.Answer the following :-

l. Why stars twinkle but planets do not ?

DAY-3

NCERT MATERIAL



PPT LINK :-

Link:-1


Link:-2


VIDEO LINK :-

Link:-1

https://youtu.be/Q-5dx2IZ4fQ

Link:-2

https://youtu.be/9MwE9PqnhnI

Link:-3

https://youtu.be/OK7WnsDM1og


Link:-1



Link:-1


Link :- 2


https://youtu.be/IKSqzC4C8jA

https://youtu.be/EzYCMfRwEwk

https://youtu.be/Y_F2GbFKZII

EXPERIMENT :-

NCERT LINK :-



LINK :-


ASSIGNMENTS :-

1. Why the apparent position of a star appears slightly higher than its actual position?

2. Why the apparent duration of a daytime , from sunrise to sunset is about 4 minutes more than the true duration?

3. Define :-

l. Scattering of light.

ll. Tyndall Effect

4. Answer the following :-

l. Why sky appears blue?

ll. Why sun appears reddish at sunset and sunrise?

lll. Why danger signals are of Red colour?

DAY-4

CHAPTER AT A GLANCE:-

PRISM AND ANGLE OF DEVIATION :-

DISPERSION OF WHITE LIGHT THROUGH A GLASS PRISM

COMBINATION OF SEVEN COLOURS TO FORM WHITE LIGHT :-

FORMATION OF RAINBOW :-

SCATTERING OF LIGHT :-

DAY-5

DISCUSSION OF IMPORTANT QUESTIONS :-

HOME ASSIGNMENT ( DO YOUR SELF )

QUESTIONS: (Answer in One word)

1. Which physical phenomenon causes splitting of white light into seven colours on passing through a prism ?

2. For which colour of white light is the angle of deviation while passing through a prism is minimum?

3. Which colour of white light has the least value of wavelength?

4. Which physicist discovered that white sun light consists of seven colours?

5. what acts as a chimney price in the formation of rainbow?

6. Name the phenomenon which is responsible for twinkling of stars?

7. Light of which colour is scattered the least by any atoms and molecules?

8. What is usual colour of danger signals?

QUESTIONS: (True and False )

1. As a result of refraction through a prism the emergent light ray bends towards the base of the prism.

2. Deviation of violet rate caused by a prism is maximum because wavelength of violet light is maximum.

3. In a glass prism speed of red light is maximum and the speed of violet light is minimum.

4. The spectrum of white light consists of seven colours.

5. Colours of the spectrum cannot be combined to form white light.

6. Optical density of earth atmosphere increases with height.

7. The sky appears to be clear white when seen from the surface of the moon.

8. The observed blue colour of the sky is due to the phenomenon of scattering of light.

QUESTIONS: ( Answer on One Sentence )

1. Give the meaning of acronym VIBGYOR.

2. What is the wavelength range of visible light?

3. Draw a figure showing refraction of light through a prism.

4. Name a natural phenomenon caused by dispersion of light.

5. How does refractive index of atmospheric air veryfit distance above the earth?

6. Define Tyndall effect.

7. Which phenomenon is responsible for apparent increase in time from the sunrise to sunset on a day?

8. State Rayleigh's law for scattering.

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