NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1968 - 1972 of 2320

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Question number: 1968

» Gravitation » Gravitational Potential

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MCQ▾

Question

The radius of the earth is R e and the acceleration due to gravity at its surface is g. The work required in raising a body of mass m to a height h form the surface of the earth will be,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1969

» Rotational Motion » Values of Moments of Inertia

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Question

Moment of inertia of a ring of mass M = 3 gm and radius R = 1 cm about an axis passing through its edge and parallel to its natural axis is,

Choices

Choice (4)Response

a.

100 gm-cm 2

b.

1 gm-cm 2

c.

10 gm-cm 2

d.

6 gm-cm 2

Question number: 1970

» Rotational Motion » Values of Moments of Inertia

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Question

A long rod has a mass of 0.10 kg and length of 200 cm. 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.

0.0025 kg-m 2

b.

0.033 kg-m 2

c.

0.025 kg-m 2

d.

0.0033 kg-m 2

Question number: 1971

» Rotational Motion » Moment of Inertia

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Question

Three rods each of length L and mass M are placed along X, Y and Z axis in such a way that one end of each of the rod is at the origin. The moment of inertia of this system about Z axis is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1972

» 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 7 Re? Earth’s mass 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.

b.

c.

d.

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