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

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## Question number: 866

Assertion-Reason▾

### Assertion (Ꭺ)

In the given figure,

### Reason (Ꭱ)

In the given figure,

### 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

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

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

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

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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