HARD
12th ICSE
IMPORTANT
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For what angle of incidence, the lateral displacement is maximum? Can it be zero?

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

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 beam of light is converging towards a point. A parallel-sided glass slab is introduced in the path of this beam. How will the point of convergence be shifted? Draw the ray-diagram.
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
Define critical angle for an interface of two media.
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
Explain 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 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.
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.

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?