EASY
12th ICSE
IMPORTANT
Earn 100

Is there is no dispersion even inside the glass slab?

Important Questions on Refraction and Dispersion of Light through a Prism

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 14
What is scattering of light? Write Rayleigh's criterion of scattering.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 15
Why does the bluish colour predominate in a clear sky?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 16
Sun looks reddish at sunset. Why?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 17
Why do danger signals employ red light?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 18

Give reasons for the following observations on the surface of moon:

Sky appears dark.

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 18

Give reasons for the following observations on the surface of moon: 

A rainbow is never observed.

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 1
Consider a ray of light passing through a prism (angle A) in the position of minimum deviation (angle δ). Show that the angles of incidence and refraction are given by i=A+δ2, r=A2.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 2
Why is a ray of light deviated by a prism? Draw a graph showing the variation of the angle of deviation with the angle of incidence. Derive an expression for the refractive index of the material of the prism in terms of its refracting angle and the angle of minimum deviation.