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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Which law of motion is called law of inertia:
Choose an answer
first law of motion
Second law of motion
Third law of motion
Law of conversation of momentum
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Question # 2
Breaking system in vehicles depends upon:
Choose an answer
Pascal's law
Hook's law
Archimedes law
Principle of floatation
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Question # 3
How many components are there of a solar heating system?
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2
3
4
5
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Question # 4
A temperature rise in the environment disturbs life called:
Choose an answer
Air pollution
Land pollution
Noice pollution
Thermal pollution
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Question # 5
The substances through which heat does not conduct:
Choose an answer
Conductors
Bad conductors
Insulators
Both B and C
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Question # 6
As we go up the density of air in the atmosphere:
Choose an answer
Decreases
Increases
Remain constnat
None of these
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Question # 7
If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:
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Maximum
Minimum
Zero
None of the above
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Question # 8
Mathematically, % efficiency is defined as & nbsp
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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 # 9
The slope of distance time graph shows.
Choose an answer
Speed
Displacement
Acceleration
Distance
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Question # 10
More radiation is reflected by the surface.
Choose an answer
White
Coloured
Black
Rough
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Question # 11
A ball of mass 1 kg moving wih velocity 2 ms
-1
its momentum will be;
Choose an answer
1 Ns
2 Ns
0.5 Ns
4 Ns
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Question # 12
Motion of butterfly is an example of.
Choose an answer
Random
Circular motion
Linear motion
Vibratory motion
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Question # 13
If a 20 N wight of block hang with the string vertically then tension in string is:
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0 N
20 N
2 N
10 N
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