NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2029 - 2032 of 2142

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Question number: 2029

» Rotational Motion » Moment of Inertia

Assertion-Reason▾

Assertion (Ꭺ)

If two different axes are at same distance from the centre of mass of a rigid body, then moment of inertia of the given rigid body about both the axes will always be the same.

Reason (Ꭱ)

From parallel axis theorem, where all terms have usual meaning.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 2030

» Rotational Motion » Torque

MCQ▾

Question

The torque required to stop a wheel of moment of inertia from a speed of 40 rad s -1 in 10 s is,

Choices

Choice (4) Response

a.

8 ⨯ 10 -3 Nm

b.

8 Nm

c.

0.8 Nm

d.

0.08 Nm

Question number: 2031

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A solid sphere is rolling on a frictionless surface shown in figure with a transnational velocity v m/s. If sphere climbs up to height h then value of v should be

Rolling sphere which is supposed to climb on height h

Rolling Sphere Which Is Supposed to Climb on Height H

Solid sphere is rolling on a frictionless surface shown in figure with a transnational velocity v m/s

Choices

Choice (4) Response

a.

b.

2gh

c.

d.

Question number: 2032

» Rotational Motion » Angular Momentum

MCQ▾

Question

A uniform rod of length 2L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be

Choices

Choice (4) Response

a.

b.

c.

d.

f Page
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