Ray Optics-Total Internal Reflection (KVPY Stream-SA (Class 11) Physics): Questions 1 - 3 of 3

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Question number: 1

» Ray Optics » Total Internal Reflection

Appeared in Year: 2011

MCQ▾

Question

Light enters an isosceles right triangular prism at normal incidence through face AB and undergoes total internal reflection at face BC as shown below.

 An isosceles right triangular prism

an Isosceles Right Triangular Prism

Figure shows light enters an isosceles right triangular prism at normal incidence through face AB and undergoes total internal reflection at face BC.

The minimum value of the refractive index of the prism is close to

Choices

Choice (4) Response

a.

1.55

b.

1.42

c.

1.10

d.

1.72

Question number: 2

» 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: 3

» 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

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