EASY
12th ICSE
IMPORTANT
Earn 100

Explain total internal reflection of light.

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 6
Write the two conditions for total internal reflection of light.
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 7
Can total internal reflection occur when light travels from rarer to denser medium?
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
What is critical angle? Give one application of total internal reflection.
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
What are optical fibres? Give their one use.
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 10

Show, with the help of ray diagrams, how an image is produced in a totally-reflecting prism.

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 11

What are the advantages of totally-reflecting prism over plane mirror?

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 12

For the same angle of incidence, the angles of refraction in three different media A, B and C are 15°, 25° and 35° respectively. In which medium will the velocity of light be minimum?

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 13

To a fish underwater viewing obliquely, does a fisherman standing on the bank of a lake appear taller or shorter than his actual height?