# Work, Energy and Power (AIIMS Physics): Questions 10 - 14 of 25

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## Question number: 10

» Work, Energy and Power » Kinetic Energy

MCQ▾

### Question

A bomb of mass 5.0 kg explodes in air into two pieces of masses 2.0 kg and 3.0 kg. The smaller mass goes at a speed of. The total energy imparted to the two fragments is –

### Choices

Choice (4) Response

a.

36 kJ

b.

48 kJ

c.

12 kJ

d.

24 kJ

## Question number: 11

» Work, Energy and Power » Power

MCQ▾

### Question

A body moves along the straight line by a machine delivering constant power. The ratio of distance at and moved by the body is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 12

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

### Question

A bullet when fired at a target with a velocity of , penetrates 4.5 meter into it. If the bullet is fired with the same velocity at a similar target with a thickness 0.5 meter, then it will emerge from it with a velocity of –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 13

» Work, Energy and Power » Elastic and Inelastic Collisions

MCQ▾

### Question

A wire suspended vertically from one end is stretched by attaching a weight of to the lower end. The weight stretches the wire by 2 mm. If the elastic energy stored in the wire is 0.4 J, what is the value of ?

### Choices

Choice (4) Response

a.

400 N

b.

100 N

c.

600 N

d.

250 N

## Question number: 14

» Work, Energy and Power » Kinetic Energy

MCQ▾

### Question

A V – shape is created by joining two same sized roads. The angle between two rods is . If this system is rotating about a line passing through their ends which are joined and perpendicular to their plane, then the work done (W) is –

### Choices

Choice (4) Response

a.

W is independent of .

b.

Maximum for

c.

Maximum for

d.

Maximum for

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