NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1922 - 1926 of 5119

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Question 1922

Question MCQ▾

The radius of the earth is Re and the acceleration due to gravity at its surface is g. The work required in raising a body of mass m to a height h form the surface of the earth will be,

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1923

Question MCQ▾

Moment of inertia of a ring of mass M = 3 gm and radius R = 1 cm about an axis passing through its edge and parallel to its natural axis is,

Choices

Choice (4)Response

a.

100 gm-cm2

b.

1 gm-cm2

c.

10 gm-cm2

d.

6 gm-cm2

Edit

Question 1924

Question MCQ▾

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.

0.0025 kg-m2

b.

0.033 kg-m2

c.

0.025 kg-m2

d.

0.0033 kg-m2

Edit

Question 1925

Question MCQ▾

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.

b.

c.

d.

Edit

Question 1926

Question MCQ▾

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 ⨯ 1024 kg, radius Re = 6.4 ⨯ 106 m and G = 6.67 ⨯ 10-11 N-m2 /kg2 .

Choices

Choice (4)Response

a.

b.

c.

d.

Edit