Ray Optics-Reflection and Refraction of Light (NEET Physics): Questions 21 - 23 of 23

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Question number: 21

» 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: 22

» 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.

Question number: 23

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

Appeared in Year: 2016

MCQ▾

Question

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is –

Choices

Choice (4) Response
a.

12

b.

10

c.

8

d.

16

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