NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 998 - 1003 of 2184

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Question number: 998

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

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MCQ▾

Question

Two plane mirrors are inclined at an angle θ. A ray of light is incident on one mirror at an angle of incidence i. The ray is reflected from this mirror, falls on the second mirror from where it is reflected parallel to the first mirror. What is the value of i, the angle of incidence in terms θ?

Choices

Choice (4) Response

a.

θ - 90°

b.

2θ - 90°

c.

4θ - 90°

d.

3θ - 90°

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.