# NEET Physics: Questions 1000 - 1006 of 2142

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## Question number: 1000

MCQ▾

### Question

If TV signals are to b received by the ground waves with in a range D, the height of the TV tower should be, (R is the radius of earth)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1001

MCQ▾

### Question

Which of the following waves have minimum frequency?

### Choices

Choice (4) Response

a.

Audible waves

b.

c.

Microwaves

d.

Ultrasonic waves

## Question number: 1002

MCQ▾

### Question

A ray of light is incident on a transparent glass-slab of refractive index 1.5. If the reflected and refracted rays are mutually perpendicular, what is the angle of incidence?

### Choices

Choice (4) Response

a.

b.

c.

30 0

d.

## Question number: 1003

MCQ▾

### Question

A 35 mm film is to be projected on a 20 m wide screen situated at a distance of 40 m from the film-projector. Calculate the focal length of projection lens.

### Choices

Choice (4) Response

a.

20 mm

b.

40 mm

c.

35 mm

d.

70 mm

## Question number: 1004

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

MCQ▾

### Question

The angle θ between two plane mirrors producing five images of a given object is given by.

### Choices

Choice (4) Response

a.

15° < θ < 72°

b.

60° < θ < 72°

c.

30° < θ < 72°

d.

45° < θ < 72°

## Question number: 1005

MCQ▾

### Question

If λ = 10 Å, then it correspond to

### Choices

Choice (4) Response

a.

X-rays

b.

Infrared waves

c.

Microwaves

d.

Ultraviolet waves

## Question number: 1006

MCQ▾

### Question

The intensity of light from a source is . Find the amplitude of electric field in this-wave-

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page