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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
To every action there is always an equal but __________ reaction:
Choose an answer
Same
Parallel
Opposite
Equal
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Question # 2
A simple way to know how much a body is hot or cold is
Choose an answer
Our sense of touch
Termometer
Thermostat
Setback state
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Question # 3
Anything kept in thermos :
Choose an answer
In temperature remain constant
Its temperature decrease
Its temperature increase
None of these
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Question # 4
All divers need to wear seat belt because of effect of:
Choose an answer
Inertia
Gravity
Car force
Nil
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Question # 5
In kelvin scale, lower reference point is:
Choose an answer
273 K
373 K
180 K
100 K
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Question # 6
Brownian motion is an example of.
Choose an answer
Linear motion
Random motion
Circular motion
Vibratory motion
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Question # 7
Mathematically, % efficiency is defined as & nbsp
Choose an answer
Efficiency % required form or input/ total input energy x 100
Efficiency % required form or input/ total input energy x 100
Efficiency % input energy / output energy x 100
Efficiency % work / time x 100
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Question # 8
A minor but sudden fall in atmospheric pressure is followed by
Choose an answer
a storm and a rain
an intense weather
a pleasant weather
a poor weather
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Question # 9
The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:
Choose an answer
5 ms
-1
12.5 ms
-1
25 ms
-1
50 ms
-1
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Question # 10
The orbital speed of a low orbit satellite is:
Choose an answer
Zeri
8 ms
-1
800 ms
-1
8000 ms
-1
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Question # 11
Racing cars are made stable by :
Choose an answer
Increasing their speed
Decrease their mass
Lowering their center of gravity
Decreasing their width
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Question # 12
A straight line parallel to time-axis ona distance -time graph tells that the object is.
Choose an answer
Moving with constant speed
In motion
At rest
Moving with variable speed
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Question # 13
The motion of a body is straight line is.
Choose an answer
Random motion
Linear motion
Translatory motion
Circular motion
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