NEET Physics: Questions 1079 - 1083 of 2142

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Question number: 1079

» Ray Optics » Magnification

MCQ▾

Question

A 0.2 cm high object is placed 15 cm from a concave mirror of focal length 5 cm. Find position and size of the image.

Choices

Choice (4) Response

a.

7.5 cm, 0.1 cm.

b.

7.5 cm, 0.4. cm.

c.

7.5 cm, 0.4 cm.

d.

10.0 cm, 0.5 cm.

Question number: 1080

» Ray Optics » Mirror Formula

MCQ▾

Question

A particle is moving at a constant speed Equation from a large distance towards a concave mirror of radius R along its principle axis, Find the speed of the image formed by the mirror as a function of the distance u of the particles from the mirror.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

All of the above

Question number: 1081

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

Question

The electric field of a plane electromagnetic wave in vacuum is represented by

Equation . Determine the wavelength of the wave.

Choices

Choice (4) Response

a.

5m

b.

4 m

c.

6 m

d.

3 m

Question number: 1082

» Ray Optics » Power of a Lens

MCQ▾

Question

A convex lens of power 4D is kept in contact with a concave lens of power 3D, the effective power of combination will

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1083

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

MCQ▾

Question

Two plane mirrors are inclined to each other at some angle. A ray of light incident at 30° on one, after reflection from the other retraces its path. The angle between the mirrors is

Choices

Choice (4) Response

a.

45°

b.

60°

c.

90°

d.

30°

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