NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1920 - 1923 of 2184

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Question number: 1920

» Gravitation » Universal Law of Gravitation

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MCQ▾

Question

An artificial satellite of the earth is to be established in the equatorial plane of the earth and to an observer at the equator it is required that the satellite will move eastward, completing one round trip per day. The distance of the satellite from the center of the earth will be- (The mass of the earth is 6.00 ⨯ 10 24 kg and its angular velocity = 8.30 ⨯ 10 -5 rad/sec)

Choices

Choice (4) Response

a.

2.66 ⨯ 10 3 m.

b.

2.44 ⨯ 10 7 m.

c.

2.66 ⨯ 10 7 m.

d.

2.66 ⨯ 10 5 m.

Question number: 1921

» Experimental Skills » Galvanometer

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Question

A current of 4A produces a deflection of 30° in the galvanometer. The figure of merit is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1922

» Experimental Skills » Focal Length

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Question

In an experiment to measure the focal length of a concave mirror, it was found that for an object distance of 0.45 m, the image distance come out to be 0.90 m. Determine the focal length.

Choices

Choice (4) Response

a.

(0.3 ± 0.02) m

b.

(0.3 ± 0.01) m

c.

(0.2 ± 0.02) m

d.

(0.1 ± 0.02) m

Question number: 1923

» Experimental Skills » Potentiometer

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MCQ▾

Question

Which of the following operations will not increase the sensitivity of a potentiometer?

Choices

Choice (4) Response

a.

Increase in the number of wires of the potentiometer.

b.

Increasing the current through the potentiometer

c.

Reducing the potential gradient.

d.

Increasing the sensitivity of the galvanometer.