NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2002 - 2006 of 2184

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Question number: 2002

» Rotational Motion » Values of Moments of Inertia

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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.

2.5 kg-m 2

b.

5.5 kg-m 2

c.

1.5 kg-m 2

d.

4.5 kg-m 2

Question number: 2003

» Rotational Motion » Moment of Inertia

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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.

b.

c.

d.

Question number: 2004

» Gravitation » Universal Law of Gravitation

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Question

Four particles, each of mass m, are placed at the corners of square and moving along a circle of radius r under the influence of mutual gravitational attraction. The speed of each particle will be –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2005

» Rotational Motion » Radius of Gyration

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Question

The radius of gyration of a disc of mass 50 g and radius 2.5 cm, about an axis passing through its center of gravity and perpendicular to the plane is

Choices

Choice (4) Response

a.

1.76 cm

b.

3.54 cm

c.

0.52 cm

d.

6.54 cm

Question number: 2006

» Gravitation » Gravitational Acceleration

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MCQ▾

Question

On a planet (whose size is the same as that of earth and mass 6 times to the earth) the energy needed to lift a 2 kg mass vertically upwards through 4 m distance on the planet is (g = l0 m/sec 2 on the surface of earth) –

Choices

Choice (4) Response

a.

480 J

b.

470 J

c.

560 J

d.

320 J