NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1080 - 1084 of 2320

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Question number: 1080

» Ray Optics » Magnification

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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, 0.4 cm.

b.

10.0 cm, 0.5 cm.

c.

7.5 cm, 0.4. cm.

d.

7.5 cm, 0.1 cm.

Question number: 1081

» Ray Optics » Mirror Formula

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MCQ▾

Question

A particle is moving at a constant speed 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.

b.

c.

d.

All of the above

Question number: 1082

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

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MCQ▾

Question

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

. Determine the wavelength of the wave.

Choices

Choice (4)Response

a.

3 m

b.

6 m

c.

4 m

d.

5m

Question number: 1083

» Ray Optics » Power of a Lens

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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.

b.

c.

d.

Question number: 1084

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

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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.

30°

b.

90°

c.

45°

d.

60°

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