MEDIUM
12th West Bengal Board
IMPORTANT
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For a prism of r.i. 3, the angle of the prism is equal to the angle of minimum deviation. The value of the angle of the prism is

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Important Questions on Refraction of Light

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 10
Optical media of r.i. μ1 and μ2 contain x and y waves of the same colour in the same thickness. Then their relative refractive index μ21 is equal to 
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 11
The maximum value of the refractive index of the material of a right angled prism to have emergent light is
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 12
It is possible to observe total internal reflection when a ray travels from
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 13
A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the latter is equal to 34 of the angle of the prism. Then the angle of deviation is
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 14
The limiting angle of incidence for a prism of angle 60° is 30°. The refractive index of the prism is
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 15
The refracting angle of a prism is A and the refractive index of the material of the prism is cotA2. The angle of minimum deviation is
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 16

The angle of a prism is 50°. A light falls on one of the refracting surfaces of the prism and suffers a minimum deviation of 30°. The refractive index of the material of the prism is

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 17
The refractive indices of water, glass and air are 1.33,1.55 and 1.00 respectively. The total internal reflection will not be seen when light comes from