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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
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 # 2
The density of a substance can be found with the help of
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Pascal's law
Hooke's law
Archimedes principle
Principle of floatation
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Question # 3
Those objects that conduct electricity are:
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Conductors
Insulators
Semi conductOrs
None of these
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Question # 4
In which hot liquid can remains hot:
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Glass
Lead
Thermos
Hot pot
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Question # 5
The energy released int he form of nuclear radiations in addition to heat and light is called:
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Mechanical energy
Gravitational energy
Chemical energy
Nuclear energy
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Question # 6
Heat radiation obey the laws of:
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Absorption
Reflection
Both A and B
None
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Question # 7
The number of perpendicular components of a force are
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1
2
3
4
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Question # 8
Amount of heat that flows in unit time is called:
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Rate of flow of heat
Q/t
Conductivity
Both A and B
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Question # 9
Everybody in the universe attracts other body with a force which is
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Directly proportional to the product of their masses
Inversely proportional to the product of their masses
Directly proportional to the distance between them
Directly proportional to the square of the distance between them
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Question # 10
If Fx and Fy are rectangular components of a vector F, then the magnitude of vector F is:
[LHR-04 1st G]
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Question # 11
Absolute zero is equal to
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0 K
273
-273 K
373 K
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Question # 12
Value of g increases with the:
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Increase in mass of the body
Increases in altitude
decrease the altitude
None of the above
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Question # 13
Moon is a _____________ satellite.
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Natural
Artificial
Not manmade
Nil
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