EASY
12th ICSE
IMPORTANT
Earn 100

The refractive index of diamond relative to air is 2.42 and that of glass is 1.51. How much faster does light travel in glass than in diamond?

Important Questions on Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 2
A ray of light in air is incident on a glass plate at 45°. The refractive index of glass is 1.5. What is angle of refraction?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 3

A ray of light which is incident in air on the surface of a glass block is deviated through 15°. The angle of incidence in air is 60°. What is the angle of refraction in glass? Also calculate the critical angle for glass air interface.

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 4
How deep will a 4 m deep tank appear when seen in air due to optical refraction? The refractive index of water is 43.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 5
A beaker is filled with water to a height of 12.5 cm. The apparent depth of a needle at the bottom of the beaker is 9.4 cm. Find refractive index of water.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 6
The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 7
A needle lying on a horizontal surface is viewed vertically from a distance of 100 cm. A glass slab of 12 cm thickness is placed on the needle. Find the distance of the vertical image of the needle from the eye, taking, ng=1.5.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 8
A microscope focussed on a pin lying at the bottom of a beaker reads 3.965 cm. When a liquid is poured up to a height of 2.537 cm into the beaker, the microscope focussed again on the pin reads 3.348 cm. Find the refractive index of the liquid.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 2 - Refraction of Light at a Plane Interface : Total Internal Reflection : Optical Fibre>QUESTIONS>Q 9
A beaker is filled with a liquid to a height of 14 cm. The apparent depth of a needle fixed at the bottom of the beaker is measured to be 10 cm by a microscope. What is the refractive index of the liquid? The height of the liquid in the beaker is now raised to 21 cm. By what distance would the microscope have to be moved to focus on the needle again?