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Online Tests
Physics 9th Class English Medium Online Test MCQs With Answers
Question # 1
Which of the following is an insulator?
Choose an answer
Wood
Glass
Plastic
Steel
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Question # 2
What of the following is a god radiator of heat?
Choose an answer
a Shinning silvered surface
a dull black surface
a white black surface
a shinning colored surface
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Question # 3
Einstein mass energy equation is:
Choose an answer
E= mc
2
E= m
2
c
E = 1/2 mc
2
2 mc
2
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Question # 4
If a 20 N wight of block hang with the string vertically then tension in string is:
Choose an answer
0 N
20 N
2 N
10 N
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Question # 5
Energy cannot be destroyed however it can be converted into some other forms. This is known as:
Choose an answer
Law of heat exchange
Law of conservation of energy
Law of conservation of momentum
None of these
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Question # 6
Which of the following is unit of momentum?
Choose an answer
Nm
Kgms
-2
Ns
Ns
-1
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Question # 7
Dependent quantities are taken on
Choose an answer
x - axis
-ve x -axis
y-axis
- y-axis
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Question # 8
Which machine is used to find acceleration due to gravity?
Choose an answer
Centrifuge
Atwood machine
Hydraulic machine
Washing machine
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Question # 9
Earth's gravitational force of attraction vanishes at
Choose an answer
6400 km
Infinity
42300 km
1000 km
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Question # 10
Heat can be transmitted form one object to the other by
Choose an answer
convection
radiation
conduction
all of these
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Question # 11
In building central heating system works on the process of:
Choose an answer
Covection
Radiation
Conduction
both a and b
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Question # 12
the to and fro motion of a body about its mean positionis called.
Choose an answer
Circular motion
Random motion
Rotatory motion
Vibratory motion
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Question # 13
Which gas is used inspite of Freon gas in refrigerator?
Choose an answer
CO
2
H
2
NH
3
N
2
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