NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1958 - 1962 of 2320

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Question number: 1958

» Gravitation » Universal Law of Gravitation

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Question

What is the mass of the planet that has a satellite whose time period is T and orbital radius is r?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1959

» Gravitation » Orbital Velocity of a Satellite

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Question

The speed with which the earth have to rotate on its axis so that a person on the equator would weigh the as much as present will be - (Take the equatorial radius as 6400 km. )

Choices

Choice (4)Response

a.

5.53 ⨯ 10 -4 rad/sec

b.

3 28 ⨯ 10 -3 rad/sec

c.

9.35 ⨯ 10 -4 rad/sec

d.

7.28 ⨯ 10 -3 rad/sec

Question number: 1960

» Rotational Motion » Values of Moments of Inertia

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Question

A long rod has a mass of 0.12 kg and length of 1 m. The moment of inertia about an axis passing through the center and perpendicular to the length of rod will be

Choices

Choice (4)Response

a.

0.001 kg-m 2

b.

0.01 kg-m 2

c.

10 kg-m 2

d.

1 kg-m 2

Question number: 1961

» Gravitation » Energy

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Question

With what velocity must a body be thrown upward form the surface of the earth so that it reaches a height of 10 R e? Mass of earth M = 6 ⨯ 10 24 kg, radius R e = 6.4 ⨯ 10 6 m and G = 6.67 ⨯ 10 -11 N-m 2 /kg 2.

Choices

Choice (4)Response

a.

10.7 ⨯ 10 3 m/s

b.

10.7 ⨯ 10 5 m/s

c.

1.07 ⨯ 10 4 m/s

d.

10.7 ⨯ 10 4 m/s

Question number: 1962

» Gravitation » Energy

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Question

The masses and the radius of the earth and the moon are M 1, M 2 and R 1, R 2 respectively their centers are at distance d apart. The minimum speed with which a particle of mass m should be projected form a point midway between the two centers so as to escape to infinity will be

Choices

Choice (4)Response

a.

b.

c.

d.

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