# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 887 - 891 of 2142

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## Question number: 887

MCQ▾

### Question

A body of mass 1 kg initially at rest explodes and breaks into three fragments of masses in the ratio 1: 1: 3. The two pieces of equal mass fly off perpendicular to each other with a speed of 30 m/sec each. What is the velocity of the heavier fragment?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 888

MCQ▾

### Question

In the figure shown, the velocity of each particle at the end of 4 sec will be -

### Choices

Choice (4) Response

a.

2.18 m/s

b.

0.872 m/s

c.

0.218 m/s

d.

8.72 m/s

## Question number: 889

MCQ▾

### Question

Find the maximum value of M/m in the situation shown in figure so that the system remains at rest. Friction coefficient at both the contacts is u.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Passage

Read the passage given below and answer the questions that follows: A block of mass 1 kg is placed on a rough horizontal surface. A spring is attached to the block whose other end is joined to a rigid wall, as shown in the figure. A horizontal force is applied on the block so that it remains at rest while the spring is elongated by x.

Let F max and F min be the maximum and minimum values of force F for which the block remains a equilibrium. For a particular x,

F max - F min = 2N

Also shown is the variation of F max + F min versus x, the elongation of the spring.

## Question number: 890 (1 of 3 Based on Passage) Show Passage

MCQ▾

### Question

The spring constant of the spring is -

### Choices

Choice (4) Response

a.

50 N/m

b.

2.5 N/m

c.

20 N/m

d.

25 N/m

## Question number: 891 (2 of 3 Based on Passage) Show Passage

MCQ▾

### Question

The coefficient of friction between the block and the horizontal surface is -

### Choices

Choice (4) Response

a.

0.1

b.

0.3

c.

0.2

d.

0.4

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