NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1081 - 1085 of 2184

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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°

Question number: 1085

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

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MCQ▾

Question

In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°. The value of C is

Choices

Choice (4) Response

a.

b.

c.

d.