NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1964 - 1968 of 2320

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Question number: 1964

» Rotational Motion » Moment of Inertia

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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.

Question number: 1965

» Rotational Motion » Radius of Gyration

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Question

Four particles each of mass m are placed at the corners of a square of side length L The radius of gyration of the system about an axis perpendicular to the square and passing through its center is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1966

» Gravitation » Universal Law of Gravitation

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Question

A particle is suspended from a spring and it stretches the spring by 2 cm on the surface of earth. The same particle will stretches the same spring at a place 600 km above earth surface by -

Choices

Choice (4)Response

a.

1.8 cm

b.

1.67 cm

c.

1.35 cm

d.

0.95 cm

Question number: 1967

» Gravitation » Gravitational Acceleration

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Question

If the radius of the earth were to shrink by one percent its mass remaining the same, the acceleration due to gravity on the earth’s surface would -

Choices

Choice (4)Response

a.

Remain unchanged

b.

Increase

c.

Decrease

d.

None of the above

Question number: 1968

» Gravitation » Gravitational Potential

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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.

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