Ray Optics (NEET Physics): Questions 91 - 95 of 102

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Question number: 91

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

MCQ▾

Question

The light reflected by a plane mirror will not form a real image

(1) If the rays incident on the mirror are diverging

(2) Under no circumstances

(3) If the object is real

(4) If the rays incident on the mirror are converging

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response
a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1, 2 and 3 are correct

Question number: 92

» Ray Optics » Power of a Lens

MCQ▾

Question

If the focal length of a magnifier is 5 cm find the magnifying power of the lens for relaxed and strained eye.

Choices

Choice (4) Response
a.

2×, 3×

b.

4×, 5×

c.

l×, 2×

d.

4×, 2×

Question number: 93

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

MCQ▾

Question

A pin is placed 10 cm in front of a convex lens of focal length 20 cm, made of material having refractive index 1.5. The surface of the lens farther away from the pin is silvered and has a radius of curvature 22 cm. determine the position of the final image.

Choices

Choice (4) Response
a.

31 cm in front

b.

11 cm in front

c.

15 cm in front

d.

21 cm in front

Question number: 94

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

Question

Two plane mirrors are placed at an angle a so that a ray parallel to one mirror gets reflected parallel to the second mirror after two consecutive reflections. The value of a will be

Choices

Choice (4) Response
a.

30°

b.

60°

c.

75°

d.

90°

Question number: 95

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

MCQ▾

Question

Two plane mirrors are inclined at an angle of 30°. Then the first four images of an object O placed between the two mirrors are correctly represented by

Choices

Choice (4) Response
a.
Two mirrors arrangement (Option a)

Two Mirrors Arrangement (Option A)

Two mirrors are inclined at an angle of 300. I1, I2, I3, and I4 are first four images of object O.

b.
Two mirrors arrangement (Option b)

Two Mirrors Arrangement (Option B)

Two mirrors are inclined at an angle of 300. I1, I2, I3, and I4 are first four images of object O.

c.
Two mirrors arrangement (Option c)

Two Mirrors Arrangement (Option C)

Two mirrors are inclined at an angle of 300. I1, I2, I3, and I4 are first four images of object O.

d.
Two mirrors arrangement (Option d)

Two Mirrors Arrangement (Option D)

Two mirrors are inclined at an angle of 300. I1, I2, I3, and I4 are first four images of object O.

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