NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1959 - 1963 of 2142

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Question number: 1959

» Rotational Motion » Values of Moments of Inertia

MCQ▾

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.

0.01 kg-m 2

b.

1 kg-m 2

c.

10 kg-m 2

d.

0.001 kg-m 2

Question number: 1960

» Gravitation » Energy

MCQ▾

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.

10.7 ⨯ 10 4 m/s

d.

1.07 ⨯ 10 4 m/s

Question number: 1961

» Gravitation » Energy

MCQ▾

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.

Question number: 1962

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Two discs of the same material and thickness have radii 0.2 m and 0.6 m. Their moments of inertia about their axes will be in the ratio of,

Choices

Choice (4) Response

a.

1: 3

b.

1: 9

c.

1: 81

d.

1: 27

Question number: 1963

» Rotational Motion » Moment of Inertia

MCQ▾

Question

A circular disc of radius R and thickness has moment of inertia I about an axis passing through its center and perpendicular to its plane. It is melted and recanted into a solid sphere. The moment of inertia of the sphere about one of its diameters as an axis of rotation will be

Choices

Choice (4) Response

a.

b.

c.

d.

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