Work, Energy and Power-Kinetic Energy (AIIMS Physics): Questions 6 - 9 of 9

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Question number: 6

» 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: 7

» 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: 8

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A body of mass 10 kg has momentum of 15kgms . When a force of 0.4 N is applied on it for 15 seconds, what is the change in its kinetic energy –

Choices

Choice (4) Response

a.

10.8 J

b.

5.0 J

c.

8.2 J

d.

15.2 J

Question number: 9

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A spherical solid ball of mass 1kg and radius 3 cm is rotating about its own axis with an angular velocity of 50 radians per second. Find its kinetic energy of rotation.

Choices

Choice (4) Response

a.

0.225J

b.

0.45J

c.

2.25J

d.

4.5J

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