Ray Optics (AIIMS (All India Institute of Medical Sciences) Physics): Questions 6 - 9 of 18

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Question number: 6

» Ray Optics » Total Internal Reflection

Appeared in Year: 2005

MCQ▾

Question

What should be the maximum acceptance angle at the air-core interface of an optical fiber if n1 and n2 are the refractive indices of the core and the cladding, respectively – [AIIMS]

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 7

» Ray Optics » Total Internal Reflection

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

Diamond glitters brilliantly.

Reason (Ꭱ)

Diamond does not absorb sunlight.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 8

» Ray Optics » Snell's Law

MCQ▾

Question

Velocity of light in a liquid is Equation and in air, it is Equation . 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: 9

» 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

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