NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1973 - 1976 of 2320

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Question number: 1973

» Rotational Motion » Moment of Inertia

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MCQ▾

Question

From a uniform wire, two circular loops are made (i) P of radius r and (ii) Q of radius nr. If the moment of inertia of loop Q about an axis passing through its center and perpendicular to its plane is 27 times that of P about a similar axis, the value of n is (diameter of the wire is very much smaller than r or nr)

Choices

Choice (4)Response

a.

3

b.

2

c.

6

d.

4

Question number: 1974

» Gravitation » Gravitational Acceleration

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MCQ▾

Question

What will be the acceleration due to gravity on the surface of the moon if its radius is th the radius of the earth and its mass is th the mass of the earth

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1975

» Gravitation » Gravitational Acceleration

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Assertion-Reason▾

Question

Assertion (Ꭺ)

There is no effect of rotation of earth on the value of acceleration due to gravity at poles.

Reason (Ꭱ)

Rotation of earth is about polar axis.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is false but Ꭱ is true

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 1976

» Gravitation » Gravitational Acceleration

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MCQ▾

Question

At what height above the earth’s surface the acceleration due to gravity will be of its value at the earth’s surface? (Radius of earth is 6400 km)

Choices

Choice (4)Response

a.

12800 km

b.

1280 km

c.

128000 km

d.

128 km

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