EASY
12th West Bengal Board
IMPORTANT
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Is refraction of light responsible for the twinkling of star ?

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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 6
Is ordinary reflection of light identical with total internal reflection? (Yes/No) _____.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 7
A ray of light is incident on a prism of given angle. Will it emerge from the prism in all cases of incidence _____?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 8
Can total internal reflection of light be applied to deviate a ray through 90° _____?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 1

A medium A is optically denser than medium B. The speed of light in medium B is _____ than that in A.

(Choose from the options: greater/lesser)

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 2
A beam of light travels in glass and then in air. The wavelength of light in air is _____than in glass.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 3
When a wave travels from one medium to another its _____ remains unchanged.
MEDIUM
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 travelling in a medium of refractive index μ1 meets the boundary of a medium of refractive index μ2. The ray will be totally reflected from the boundary if the refractive index μ1r.i. μ2 and the angle of incidence is _____ (lesser/greater) than sin-1μ2μ1.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 5

The minimum value of the ri. of an isosceles prism ABC(AC=BC) so that a ray, incident normally on the face AB can travel as shown in Fig. 13.91 is _____.

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