NEET Physics: Questions 1998 - 2002 of 2098

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Question number: 1998

» Rotational Motion » Values of Moments of Inertia

MCQ▾

Question

Moment of inertia of a ring of mass M = 5 gm and radius R = 2 cm about an axis passing through its edge and parallel to its natural axis is

Choices

Choice (4) Response

a.

30 gm-cm 2

b.

40 gm-cm 2

c.

35 gm-cm 2

d.

45 gm-cm 2

Question number: 1999

» Gravitation » Gravitational Acceleration

MCQ▾

Question

If the radius of the earth were to shrink by 25 % its mass remaining the same, the acceleration due to gravity on the earth’s surface would be given as-

Choices

Choice (4) Response

a.

g0.75

b.

g0.752

c.

g0.252

d.

g0.25

Question number: 2000

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

Two concentric shells of uniform density having masses M 1 and M 2 are situated as shown in the figure. The force on the particle of mass m when it is located at r = b is

Two concentric shells - having masses M1 and M2

Two Concentric Shells - Having Masses M1 and M2

In above fig we shows that two concentric shells of uniform density having masses M1 and M2

Choices

Choice (4) Response

a.

GM1mb2

b.

GM2mb2

c.

G(M1+M2)mb2

d.

G(M1M2)mb2

Question number: 2001

» Rotational Motion » Values of Moments of Inertia

MCQ▾

Question

A constant torque of 31.4 N-m is exerted on a pivoted wheel. If angular acceleration of wheel is 4π rad/sec 2, then the moment of inertia of the wheel is

Choices

Choice (4) Response

a.

4.5 kg-m 2

b.

5.5 kg-m 2

c.

2.5 kg-m 2

d.

1.5 kg-m 2

Question number: 2002

» Rotational Motion » Moment of Inertia

MCQ▾

Question

A disc is of mass M and radius R. The moment of inertia of it about an axis tangential to its edge and in polarize of the disc or parallel to its diameter is

Choices

Choice (4) Response

a.

32Mr2

b.

14Mr2

c.

54Mr2

d.

12Mr2

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