NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 866 - 870 of 2142

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Question number: 866

» Laws of Motion » Force and Inertia

Assertion-Reason▾

Assertion (Ꭺ)

In the given figure, Equation

Reason (Ꭱ)

In the given figure, Equation

Finding acceleration in the pulley system

Finding Acceleration in the Pulley System

What is the acceleration in this system

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 867

» Kinematics » Average Speed and Instantaneous Velocity

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.

0.5 m/s

c.

0.6 m/s

d.

-0.2 m/s

Question number: 868

» Laws of Motion » Static and Kinetic Friction

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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 869

» Laws of Motion » Momentum

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.

3 Ns

b.

6 Ns

c.

2 Ns

d.

4 Ns

Question number: 870

» Kinematics » Average Speed and Instantaneous Velocity

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 6 N

b.

2.5 x l0 4 N

c.

500 N

d.

300 N

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