# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1080 - 1084 of 2142

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## Question number: 1080

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: 1081

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.

5m

b.

4 m

c.

6 m

d.

3 m

## Question number: 1082

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: 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°

## Question number: 1084

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.

f Page