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We have listed important basic Physics questions and answers. These physics gk questions are frequently asked in many competative exams, you should go through it.
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Q 91.
In a barometer, mercury is preferred over water because ?
Ans.
Mercury has high density and low vapour pressure
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Q 92.
Definition of force comes from Newton's ?
Ans.
First law of motion
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Q 93.
The atmosphere exerts enormous pressure on us. But we do not feel it because ?
Ans.
Our blood exerts a pressure slightly more than that of the atmosphere
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Q 94.
Atmospheric pressure is measured with a ?
Ans.
Barometer
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Q 95.
A passenger in a moving train tosses a coin upward which falls behind him. What is the motion of the train is?
Ans.
Accelerated
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Q 96.
Inside an aeroplane, flying at a high altitude ?
Ans.
Normal atmosphere pressure is maintained
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Q 97.
It is easy to burst a gas-filled balloon with a needle than with a nail. It is because ?
Ans.
Needle exerts more pressure than nail on the balloon
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Q 98.
A steel ball floats on mercury because ?
Ans.
The density of mercury is higher than that of steel
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Q 99.
When the milk is churned vigorously the cream from it is separated out due to ?
Ans.
Centrifugal force
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Q 100.
When a ship enters a sea from a river ?
Ans.
It rises a little
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Q 101.
Why a person can jump higher on the moo's surface than on the earth surface ?
Ans.
Because the acceleration due to gravity in moon is smaller than that on the earth.
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Q 102.
Who invented the Safety Razor ?
Ans.
Gillette.
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Q 103.
"Joule" is related to energy in the same way "pascal" is related to ?
Ans.
Pressure
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Q 104.
Name the instrument used to measure pressure ?
Ans.
Aneroid Barometer.
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Q 105.
Distance of stars are measured in ?
Ans.
Light Year.
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Q 106.
Name one vector quantity ?
Ans.
Momentum.
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Q 107.
What is the unit of magnetic flux ?
Ans.
Weber.
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Q 108.
Which is the unit of maxwell ?
Ans.
Magnetic flux.
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Q 109.
Electric potential is measured in units of ?
Ans.
Coulomb.
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Q 110.
Which physical quantities have same dimensions ?
Ans.
Momentum and impulse.
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Q 111.
Which physical quantities do not have same dimensions ?
Ans.
Force and Pressure.
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Q 112.
What is the most suitable unit for expressing nuclear radius ?
Ans.
Fermi.
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Q 113.
What is Internal forces ?
Ans.
They are always balanced.
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Q 114.
One astronomical unit is the average distance between ?
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Earth and the sun.
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Q 115.
What is the unit of curie ?
Ans.
Radio activity.
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Q 116.
What is the SI unit of pressure ?
Ans.
Pascal.
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Q 117.
What is the basic unit of speed ?
Ans.
Metre/ Second.
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Q 118.
What is the unit of Ampere ?
Ans.
Current Electricity.
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Q 119.
What is the unit of Light year ?
Ans.
Distance.
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Q 120.
What is the Unit of solid angle ?
Ans.
Steradian.
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