Work, Energy and Power (AIIMS Physics): Questions 15 - 19 of 25

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Question number: 15

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

Two bodies with kinetic energies in the ratio of 4:1 are moving with equal linear momentum. The ratio of their masses is –

Choices

Choice (4) Response
a.

1:1

b.

4:1

c.

1:4

d.

1:2

Question number: 16

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

Question

A bullet loses 110th of its velocity when it passes through a plank. Find the maximum number of planks through which it can pass.

Choices

Choice (4) Response
a.

10

b.

5

c.

3

d.

9

Question number: 17

» Work, Energy and Power » Conservative and Non-Conservative Forces

MCQ▾

Question

A water drop of mass m=200mg is introduced between two plates with separation d=0.10mm . Calculate the force of attraction between the plates.

Choices

Choice (4) Response
a.

1.8 N

b.

2.8 N

c.

1.0 N

d.

3.2 N

Question number: 18

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

Find the mean translation kinetic energy of an oxygen molecule at 270 C. (Given: Avogadro number N=6.03×1023permole and R=8.3JK1mol1 ).

Choices

Choice (4) Response
a.

4.56×1021J

b.

4.56×1021J

c.

6.19×1021J

d.

5.20×1021J

Question number: 19

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

Question

A block of mass 20 kg is moving in x-direction with a constant speed of 10ms . It is subjected to a retarding force F=0.2xjoulesmeter during its travel from x=10meters to x=30meters . Its final kinetic energy will be –

Choices

Choice (4) Response
a.

500 joules

b.

850 joules

c.

750 joules

d.

920 joules

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