MEDIUM
10th CBSE
IMPORTANT
Earn 100

Draw a ray diagram to show the path of light ray that enters the glass obliquely. Label on it the angle of incidence and angle of derivation.

Important Questions on The Human Eye and Colourful World

HARD
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 18
Why does the sun appear reddish early in the morning? Will the same phenomenon be observed by an observer on the moon. Justify your answer.        
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 19

(i) Show formation of rainbow with the help of a ray diagram.

(ii) what are the conditions of rainbow to exists? 

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 20
How will you use two identical glass prisms so that a narrow beam of white light incident on one of the prisms emerges out of the second prism as a beam of white light? Draw a labelled diagram to illustrate it.          
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 21

What is atmospheric refraction? Use this phenomenon to explain the following natural events :

(i) Twinkling stars

Draw diagrams to illustrate your answer.

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 21

What is atmospheric refraction? Use this phenomenon to explain the following natural events :

(ii) Advanced sunrise and delayed sunset.

Draw diagrams to illustrate your answer.

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 22

What is dispersion of white light? What is the cause of such dispersion? Draw a diagram to shown the dispersion of white light by a glass prism.

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 22

A glass prism is able to produce a spectrum when white light passes through it but a glass slab does not produce any spectrum. Explain why is it so? 

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 2 - The Human Eye and Colourful World>Assignment-2>Q 23
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using identical glass prisms? Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted positions with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the refractive surfaces of the first prism.