# Ray Optics (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 13 - 16 of 26

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## Question number: 13

» Ray Optics » Lens Maker's Formula and Lens Formula

MCQ▾

### Question

For an equal-convex lens of radius of curvature 25, the object placed in a medium of refractive index 1.33. On the image side the refractive index is 1.75. The focal length of this lens will be,

### Choices

Choice (4) Response

a.

51 cm

b.

79.16 cm

c.

69.26 cm

d.

88.55 cm

## Question number: 14

MCQ▾

### Question

The eye is natural optical instrument. Because,

(2) It can focusing according to distance by changing focal length of lens

(3) It can adjust intensity of light

(4) Focal length remains fix

Select the correct option,

### Choices

Choice (4) Response

a.

(1) and (2) correct

b.

(2) and (3) correct

c.

(1) and (4) correct

d.

(1), (2) & (3) are correct

## Question number: 15

» Ray Optics » Total Internal Reflection

Appeared in Year: 2013

MCQ▾

### Question

A ray of light incident on a transparent sphere at an angle 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.

b.

c.

d.

## Question number: 16

» 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.

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

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page