KVPY Stream-SA (Class 11) Physics: Questions 109 - 111 of 252

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Question number: 109

» Ray Optics » Total Internal Reflection

Appeared in Year: 2013

MCQ▾

Question

A ray of light incident on a transparent sphere at an angle π4 and refracted at an angle r, emerges from the sphere after suffering one internal reflection. The total angle of deviation of the ray is.

Choices

Choice (4) Response

a.

π4r

b.

3π24r

c.

5π24r

d.

π24r

Question number: 110

» Ray Optics » Total Internal Reflection

Appeared in Year: 2014

MCQ▾

Question

A ray of light incident parallel to the base PQ of an isosceles right-angled triangular prism PQR suffers two successive total internal reflections at the face PQ and QR before emerging reversed in direction as shown.

ray of light istravelling through right-angled triangularprism

Ray of Light Istravelling Through Right-Angled Triangularprism

Figure shows a ray of light is travelling through isosceles right-angled prism PQR by suffering two successive total internal reflections.

If the refractive index of the material of the prism is μ, then

Choices

Choice (4) Response

a.

μ<2

b.

μ>5

c.

2<μ<3

d.

3<μ<5

Question number: 111

» Laws of Motion » Static and Kinetic Friction

Appeared in Year: 2014

MCQ▾

Question

A box when dropped from a certain height reaches the ground with a speed V. When it slides from rest from the same height down a rough inclined plane inclined at an angle 45° to the horizontal, it reaches the ground with a speed V3 . The coefficient of sliding friction between the box and the plane is (acceleration due to gravity is 10 ms-2)

Choices

Choice (4) Response

a.

89

b.

23

c.

19

d.

13

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