EASY
12th West Bengal Board
IMPORTANT
Earn 100

Refractive index of glass is 1.5 and that of water is 1.33. If the velocity of light in glass be 2×108 ms-1 what is the velocity of light in water?

Important Questions on Refraction of Light

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 3
A glass hemisphere of radius 4 cm and r.i. 1.6 is placed centrally over a cross-mark on a paper (i) with flat surface
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 3
A glass hemisphere of radius 4 cm and refractive index 1.6 is placed centrally over a cross-mark on a paper with curved surface, in contact with the cross-mark. Find the position of the image of the cross mark when viewed directly from above.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 4
A ray of light is incident on a parallel sided glass block at an angle 60°. If the thickness of the block be 6 cm, find the lateral shift of the ray. R.I. of glass =3.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 5
There is a spot on the inside bottom of a pot. A liquid of
r.i. 1.4 is poured into the pot. How much will the spot appear to be raised when viewed from the top if the depth of the liquid is 3.5 cm ? 
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 6
A plane mirror is made of a thick plate of glass (u=1.5) of thickness 1.5 cm and silvered on the back. A man is standing 50 cm from the front surface of the mirror. If he looks perpendicularly into it, at what distance behind the front surface of the mirror will his image appear to be? 
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 7
A tree branch overhanging a lake at a height h1 is seen by a diver inside water (u=1.33) at a height h2 What is the relation between h1 and h2 ?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 8
When a small lamp is held 1.5m above the surface of a tank, the image of the lamp seen by reflection at the surface appears to coincide with the image of the bottom of the tank. If the refractive index of water is 4 / 3, calculate the depth of the tank. 
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 9
A ray of light travelling within a rectangular glass block falls on one of the faces of the block at an angle of incidence 30°. Some of the light is reflected internally and the rest emerges into air. Given that the r . i. of glass for the light is 1.5, calculate the angle between the internally reflected ray and the emergent ray.  Sin 48° 40'=0.75