Ray Optics-Snell's Law (AIIMS Physics): Questions 1 - 4 of 4

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Question number: 1

» Ray Optics » Snell's Law

MCQ▾

Question

Velocity of light in a liquid is 2.12×108ms1 and in air, it is 3×108ms1 . If a ray of light passes from this liquid into air, the critical angle will be –

Choices

Choice (4) Response
a.

600

b.

450

c.

300

d. Question does not provide sufficient data or is vague

Question number: 2

» Ray Optics » Snell's Law

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

By roughening the surface of a glass sheet its transparency can be reduced.

Reason (Ꭱ)

Glass sheet with rough surface absorbs more light.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 3

» Ray Optics » Snell's Law

MCQ▾

Question

Velocity of light in a liquid is 1.5×108ms1 and in air, it is 3×108ms1 . If a ray of light passes from this liquid into air, the critical angle will be –

Choices

Choice (4) Response
a.

600

b.

300

c.

450

d. Question does not provide sufficient data or is vague

Question number: 4

» Ray Optics » Snell's Law

MCQ▾

Question

What is the velocity of the light in the medium if sinθi=0.707,sinθr=0.500, and the velocity of light in a vacuum is 3.0×108ms ?

Choices

Choice (4) Response
a.

4.2×108ms

b.

2.1×108ms

c.

1.4×108ms

d.

2.8×108ms

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