NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 841 - 845 of 2184

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Question number: 841

» Laws of Motion » Laws of Friction

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MCQ▾

Question

The coefficient of static friction between a block of mass m and an inclined plane is n s = 0.3. What can be the maximum angle 9 of the inclined plane with the horizontal so that the block does not slip on the plane?

Choices

Choice (4) Response

a.

tan -1 (0.4)

b.

tan -1 (0.1)

c.

tan -1 (0.2)

d.

tan -1 (0.3)

Question number: 842

» Kinematics » Average Speed and Instantaneous Velocity

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Question

In the fig shown, the velocity of each particle at the end of 4 sec will be -

Two mases A and B on a pulley system

Two Mases a and B on a Pulley System

Understanding the velocity of each particle

Choices

Choice (4) Response

a.

1.744 m/s

b.

0.872 m/s

c.

2.18 m/s

d.

0.218 m/s

Question number: 843

» Kinematics » Average Speed and Instantaneous Velocity

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Question

A body of mass 2 kg strikes elastically with another body at rest and continues to move in the same direction with one fourth of its initial velocity. The mass of the other body is –

Choices

Choice (4) Response

a.

4 kg

b.

2.4 kg

c.

1.2 kg

d.

0.6 kg

Question number: 844

» Laws of Motion » Laws of Friction

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MCQ▾

Question

If the coefficient of friction between an insect and bowl is u and the radius of the bowl is r, find the maximum height to which the insect can crawl in the bowl.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 845

» Kinematics » Average Speed and Instantaneous Velocity

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Question

A bullet of mass 0.01 kg travelling at a speed of 200 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The center of gravity of the block is found to rise a vertical distance of 0.1 m The speed of the bullet after it emerges from the block will be -

Choices

Choice (4) Response

a.

1.4 m/s

b.

220 m/s

c.

80 m/s

d.

20 m/s