NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 866 - 869 of 2320

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Question number: 866

» Laws of Motion » Laws of Friction

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Maximum value of friction force between two surfaces is u x normal reaction. Where u = coefficient of friction between surfaces.

Reason (Ꭱ)

Friction force between surfaces of two bodies is always less than or equal to externally applied force.

Choices

Choice (4)Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question number: 867

» Laws of Motion » Force and Inertia

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

In the given figure,

Reason (Ꭱ)

In the given figure,

Finding acceleration in the pulley system

Finding Acceleration in the Pulley System

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: 868

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 gm and a muzzle velocity of 200 m/s. What velocity does rifle man acquire at the end of 10 shots?

Choices

Choice (4)Response

a.

1.2 m/s

b.

-0.2 m/s

c.

0.5 m/s

d.

0.6 m/s

Question number: 869

» Laws of Motion » Static and Kinetic Friction

Edit
MCQ▾

Question

Assuming the length of a chain to be L and coefficient of static friction u. Compute the maximum length of the chain which can be held outside a table without sliding.

Choices

Choice (4)Response

a.

b.

c.

d.

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