NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 999 - 1004 of 2320

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Question number: 999

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

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MCQ▾

Question

An air bubble in water acts as,

Choices

Choice (4)Response

a.

A divergent lens

b.

A convergent lens

c.

A plane mirror

d.

Question does not provide sufficient data or is vague

Question number: 1000

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

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MCQ▾

Question

Find the number of images formed by two mutually perpendicular mirrors -

Choices

Choice (4)Response

a.

2

b.

1

c.

4

d.

3

Question number: 1001

» Electromagnetic Waves » Applications of Electromagnetic Waves

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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: 1002

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

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MCQ▾

Question

Which of the following waves have minimum frequency?

Choices

Choice (4)Response

a.

Radio waves

b.

Ultrasonic waves

c.

Audible waves

d.

Microwaves

Question number: 1003

» Ray Optics » Snell's Law

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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.

30 0

c.

d.

Question number: 1004

» Ray Optics » Lens Maker's Formula and Lens Formula

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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.

70 mm

b.

20 mm

c.

40 mm

d.

35 mm

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