NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1969 - 1972 of 2142

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Question number: 1969

» Rotational Motion » Values of Moments of Inertia

MCQ▾

Question

A long rod has a mass of 0.10 kg and length of 200 cm. The moment of inertia about an axis passing through the center and perpendicular to the length of rod will be,

Choices

Choice (4) Response

a.

0.0033 kg-m 2

b.

0.033 kg-m 2

c.

0.0025 kg-m 2

d.

0.025 kg-m 2

Question number: 1970

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Three rods each of length L and mass M are placed along X, Y and Z axis in such a way that one end of each of the rod is at the origin. The moment of inertia of this system about Z axis is,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1971

» Gravitation » Energy

MCQ▾

Question

With what velocity must a body be thrown upward form the surface of the earth so that it reaches a height of 7 Re? Earth’s mass M = 6 ⨯ 10 24 kg, radius R e = 6.4 ⨯ 10 6 m and G = 6.67 ⨯ 10 -11 N-m 2 /kg 2.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1972

» Rotational Motion » Moment of Inertia

MCQ▾

Question

From a uniform wire, two circular loops are made (i) P of radius r and (ii) Q of radius nr. If the moment of inertia of loop Q about an axis passing through its center and perpendicular to its plane is 27 times that of P about a similar axis, the value of n is (diameter of the wire is very much smaller than r or nr)

Choices

Choice (4) Response

a.

4

b.

6

c.

2

d.

3

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