NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1918 - 1920 of 2142

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Question number: 1918

» Experimental Skills » Potentiometer

MCQ▾

Question

A potentiometer works on the principle that

Choices

Choice (4) Response

a.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is inversely proportional to the length of the wire between the points

b.

when a current flows through a wire of uniform thickness and material, potential difference between its two points doesn’t depend on the length of the wire between the points

c.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is directly proportional to the length of the wire between the two points

d.

All of the above

Question number: 1919

» Gravitation » Universal Law of Gravitation

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 5 m.

d.

2.66 ⨯ 10 7 m.

Question number: 1920

» Experimental Skills » Galvanometer

MCQ▾

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.

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