EASY
12th ICSE
IMPORTANT
Earn 100

Define dispersive power of the material of a prism.

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 10
State two basic differences between primary and secondary rainbows.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 11

The refractive indices for crown and flint glasses for red and violet light are:

 Light Crown Flint
Red 1.515 1.644
Violet 1.532 1.685

Which glass will be more suitable for spectacle lens and why?

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 12
Why there is no dispersion in white light refracted through a rectangular glass slab?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 13
Is there is no dispersion even inside the glass slab?
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?