NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2007 - 2010 of 2184

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Question number: 2007

» Rotational Motion » Moment of Inertia

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MCQ▾

Question

Two rings of the same radius and mass are placed such that their centers are at a common point and their planes are perpendicular to each other. The moment of inertia of the system about an axis passing through the center and perpendicular to the plane of one of the rings is (mass of the ring = m and radius = r)

Choices

Choice (4) Response

a.

b.

c.

d.

2

Question number: 2008

» Rotational Motion » Torque

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Question

A thin wire of length L and uniform linear mass density ρ is bent into a circular loop with center at O as shown in figure. The moment of inertia of the loop about the axis XX’ is

Circular loop of wire of length L

Circular Loop of Wire of Length L

Thin wire of length L and uniform linear mass density p is bent into a circular loop with center at O

Choices

Choice (4) Response

a.

b.

c.

d.

Passage

Read the passage given below and answer the questions that follows:

The orbit of Pluto is much more eccentric than the orbits of the other planets. That is, instead of being nearly circular, the orbit is noticeably elliptical. The point in the orbit nearest to the sun is called the perihelion and the point farthest from the sun is called the aphelion.

Orbit of Pluto - perihelion and the aphelion

Orbit of Pluto - Perihelion and the Aphelion

In above figure we shows that the perihelion and the aphelion of the Pluto’s orbit.

Question number: 2009 (1 of 3 Based on Passage) Show Passage

» Gravitation » Gravitational Potential

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MCQ▾

Question

As Pluto moves from the perihelion to the aphelion, the work done by gravitational pull of Sun on Pluto is

Choices

Choice (4) Response

a.

zero

b.

negative

c.

Depends on sense of rotation

d.

positive

Question number: 2010 (2 of 3 Based on Passage) Show Passage

» Gravitation » Gravitational Potential

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MCQ▾

Question

At perihelion, the gravitational potential energy of Pluto in its orbit has

Choices

Choice (4) Response

a.

Value which depends on sense of rotation

b.

The same value as at every other point in the orbit

c.

Its minimum value

d.

Its maximum value