NEET Physics: Questions 1964 - 1968 of 2098

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Question number: 1964

» Rotational Motion » Radius of Gyration

MCQ▾

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.

(2)L

b.

L

c.

L2

d.

L2

Question number: 1965

» Gravitation » Universal Law of Gravitation

MCQ▾

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.

0.95 cm

b.

1.35 cm

c.

1.67 cm

d.

1.8 cm

Question number: 1966

» Gravitation » Gravitational Acceleration

MCQ▾

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.

Decrease

b.

Remain unchanged

c.

Increase

d.

Question does not provide sufficient data or is vague

Question number: 1967

» Gravitation » Gravitational Potential

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.

mgh(1hRe)

b.

mg(1+hRe)

c.

mgh(1+hRe)2

d.

mgh(1+hRe)

Question number: 1968

» Rotational Motion » Values of Moments of Inertia

MCQ▾

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.

10 gm-cm 2

b.

6 gm-cm 2

c.

100 gm-cm 2

d.

1 gm-cm 2

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