NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1949 - 1953 of 2142

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Question number: 1949

» Gravitation » Gravitational Acceleration

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.

25600 km

b.

2228 km

c.

12800 km

d.

2560 km

Question number: 1950

» Rotational Motion » Radius of Gyration

MCQ▾

Question

The moment of inertia of a sphere of mass M and radius R 2 about an axis passing through its center is -MR. The radius of gyration of the sphere about a parallel axis to the above and tangent to the sphere is,

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1951

» Rotational Motion » Values of Moments of Inertia

MCQ▾

Question

A cylinder of 800 g and radius 30 cm has moment of inertia (about its natural axis)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1952

» Rotational Motion » Moment of Inertia

MCQ▾

Question

The density of a rod AB increases linearly from A to B. Its midpoint is O and its centre of mass is at C. Four axes pass through A, B, O and C all perpendicular to the length of the rod. The moments of inertia of the rod about this axis are I A, I B, I O and I C respectively then:

(1) (2)

(3) (4)

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 2 are correct

c.

1,2 and 3 are correct

d.

1 and 3 are correct

Question number: 1953

» Gravitation » Universal Law of Gravitation

MCQ▾

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.

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