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Online Tests
Physics 9th Class English Medium Online Test MCQs With Answers
Question # 1
Worst absorber of heat is:
Choose an answer
Dull black surface
Coloured surface
Shinning silvered surface
White surface
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Question # 2
Earth's gravitational force of attraction vanishes at:
Choose an answer
6400 km
Infinity
42300 km
1000 km
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Question # 3
The work is negative if the angle between force and displacement is:
Choose an answer
0
°
45
°
90
°
180
°
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Question # 4
The main source of energy n the universe is:
Choose an answer
Moon
Stars
Sun
Planets
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Question # 5
On heating Air become:
Choose an answer
Heavier
Lighter
Remain same
None of these
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Question # 6
Rocket works on principle of ______________
Choose an answer
Action Reaction
Law of inertia
Mass energy
Nil
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Question # 7
When the stress crosses the elastic limit, then the body will :
Choose an answer
Break
Permanently deformed
Plasticity
None
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Question # 8
The value of g on moon's surface is 1.6 ms
-2
. what will be the weight of a 100 kg body on the surface of the moon?
Choose an answer
100 N
160 N
1000 N
1600 N
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Question # 9
Mass per unit volume is:
Choose an answer
Velocity
Work
Density
None
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Question # 10
Newton discovered the cause of falling apple in :
Choose an answer
1886
1905
1665
1600
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Question # 11
_______________ was a pupil of Galileo.
Choose an answer
Einstein
Robert
Al Razi
Torricelli
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Question # 12
The unit of Heat is:
Choose an answer
Kelvin
Joule
Jkg
-1
K
-1
kg
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Question # 13
If a liquid of mass 'm' requires thermal energy 'ΔQv' to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vapourization can be calculated as following:
Choose an answer
Hv = m/ΔQv
Hv = mΔQv
Hv = cmΔQv
Hv =ΔQv/m
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