Mechanics and Properties of Matter TNPSC Group 2 2A Questions

Physics

Mechanics and Properties of Matter MCQ Questions

1.

The mass of a body on earth is 100kg.(acceleration due to gravity, ge=10m/s2). If acceleration due to gravity on moon is (ge/6), then the mass of the body on the moon is

A.

100/6 kg

B.

60 kg

C.

100 kg

D.

600 kg

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ANSWER :

C. 100 kg (Mass is indestructible.no matter where you are in the universe your mass will never change and Mass can never be zero)

2.

The acceleration due to gravity of a catastrophic earthquake will be

A.

550 cm/sec2

B.

750 cm/ sec2

C.

950 cm/sec2

D.

980 cm/sec2

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ANSWER :

D. 980 cm/sec2

3.
If a ball is dropped from the roof of a building with a constant acceleration of 9.8 m/s2 , what will be its velocity after 3 seconds?
A.
9.8 m/s
B.
19.6 m/s
C.
29.4 m/s
D.
39.2 m/s
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ANSWER :
C. 29.4 m/s
4.
A person can jump higher at the moon's surface than on the earth's surface. Since,
A.
the moon's surface is rough
B.
the temperature of the moon is less
C.
the moon has no atmosphere
D.
the value of acceleration due to gravity on the moon's surface is less
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ANSWER :
D. the value of acceleration due to gravity on the moon's surface is less
5.
momentum of a moving body
A.
depends upon its mass alone
B.
depends upon its velocity alone
C.
depends upon both its mass and velocity
D.
does not depends upon its mass and velocity
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ANSWER :
C. depends upon both its mass and velocity
6.
If the linear momentum of a particle is doubled then its Kinetic Energy will be
A.
doubled
B.
quadrupled
C.
halved
D.
same
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ANSWER :
B. quadrupled