NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1954 - 1957 of 2320

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Question number: 1954

» Gravitation » Universal Law of Gravitation

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Question

Three particles of equal mass m are situated at the vertices of an equilateral triangle of side l. What should be the velocity of each particle, so that they move on a circular path without changing l?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1955

» Rotational Motion » Moment of Inertia

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Question

Three point masses m 1, m 2, m 3 are located at the vertices of an equilateral triangle of length ‘a’. The moment of inertia of the system about an axis along the altitude of the triangle passing through m 1, is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1956

» Rotational Motion » Moment of Inertia

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Two discs of same thickness but of different radii are made of two different materials such that their masses are same. The densities of the materials are in the ratio 1: 3. The ratio of the moments of inertia of these discs about the respective axes passing through their centers and perpendicular to their planes will be in,

Choices

Choice (4)Response

a.

1: 9

b.

3: 1

c.

9: 1

d.

1: 3

Question number: 1957

» Gravitation » Energy

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If g is the acceleration due to gravity on the earth’s surface the gain in P. E. of an object of mass m raised from the surface of the earth to a height of the radius R of the earth is -

Choices

Choice (4)Response

a.

b.

c.

d.

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