NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 866 - 870 of 2184

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Question number: 866

» 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

What is the acceleration in this 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: 867

» Kinematics » Average Speed and Instantaneous Velocity

Edit
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: 868

» 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.

Question number: 869

» Laws of Motion » Momentum

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MCQ▾

Question

A force of 1 N is applied on a particle for 3 sec, the change in momentum will be -

Choices

Choice (4) Response

a.

2 Ns

b.

3 Ns

c.

6 Ns

d.

4 Ns

Question number: 870

» Kinematics » Average Speed and Instantaneous Velocity

Edit
MCQ▾

Question

The rate of burning of fuel in a rocket is 100 gm/sec. and comes out with and velocity 5 x 10 3 m/s. The force exerted by gas on rocket will be –

Choices

Choice (4) Response

a.

2.5 x l0 4 N

b.

500 N

c.

300 N

d.

2.5 x l0 6 N