MEDIUM
12th West Bengal Board
IMPORTANT
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Why does a glass rod immerse in glycerine become invisible?

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 13
What are the laws of refraction? What is refractive index? What do you mean by saying that the refractive index of glass is 1.5?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 14
What is meant by a medium being optically denser than another?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 14
What is the relation of optical density with the physical density of the medium?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 14
Arrange the following media according to increasing optical density- (i) glass (ii) turpentine (iii) ice, and (iv) water.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 15
A converging beam of rays tries to meet at a point on a screen, but they are intercepted by a parallel-sided glass block. Where will the rays meet now? Draw a diagram.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 16
What is critical angle? What is its relation with refractive index?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 17
Why does a piece of diamond appear more glittering than a piece of glass of same shape and size?
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 13 - Refraction of Light>EXERCISE 13>Q 18
What is an optical fibre? Explain its working principle. Mention some of its uses.