# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 897 - 901 of 2142

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## Passage

A bead of mass m is attached to one end of a spring of natural length R and spring constant The other end of the spring is fixed at point A on a smooth ring of radius R as shown in figure. When bead is released to move then

## Question number: 897 (3 of 3 Based on Passage) Show Passage

MCQ▾

### Question

Initial elongation in the spring is -

### Choices

Choice (4) Response

a.

2R

b.

R

c.

d.

## Question number: 898

MCQ▾

### Question

A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration ‘a’ directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration ‘a’ vertically. The tension in the string is –

### Choices

Choice (4) Response

a.

b.

c.

m (g - a)

d.

## Question number: 899

MCQ▾

### Question

The mass of a rocket is 500 kg and the relative velocity of the gases ejecting from it is 250 m/s with respect to the rocket. The rate of burning of the fuel in order to give the rocket an initial acceleration 20 m/s 2 in the vertically upward direction (g = 10 m/s 2), will be –

### Choices

Choice (4) Response

a.

45 kg/s

b.

10 kg/s

c.

60 kg/s

d.

30 kg/s

## Question number: 900

MCQ▾

### Question

Block A weighs 4 N and block B weighs 8 N. The coefficient of kinetic friction is 0.25 for all surfaces. find the force F to slide B at a constant speed when A is held at rest.

### Choices

Choice (4) Response

a.

1N

b.

2N

c.

3N

d.

4N

## Question number: 901

MCQ▾

### Question

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 900 m/s. What velocity does rifle man acquire at the end of 10 shots.

### Choices

Choice (4) Response

a.

0.3 m/s

b.

0.6 m/s

c.

0.9 m/s

d.

0.5 m/s

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