Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
Boiling occurs when the vapour pressure of a liquid is
At the evaporation point
Less than the atmospheric pressure
Greater than the atmospheric pressure
Equal to the atmospheric pressure
Correct answer is D
No explanation has been provided for this answer.
The impulse of a force is deduced from Newton's second law as
F = ma
F = m( \(\frac{v - u}{t}\)
F = mg
F = mv - mu
Correct answer is B
No explanation has been provided for this answer.
8.7N
37.0N
87.0N
13.0N
Correct answer is B
Upthrust = Weight or water displaced
= 3.7 x 10 = 37N
A manometer is an instrument used for measuring
Relative density of liquid
Pressure in liquids and gases
Humidity
Atmospheric pressure
Correct answer is B
a manometer is used to measure pressure in liquids and gases. Manometer gauges measure the pressure of gases and vapors from atmospheric to about 1 Pa by balancing the force exerted by the gas or vapor against the weight of a column of liquid, usually mercury, water, or oil.
A satellite revolving around the earth is kept on its orbit by?
Centripetal forces only
Centripetal and frictional forces
Centrifugal forces only
Centripetal and centrifugal forces
Correct answer is A
The concept of centrifugal force can be applied in rotating devices, such as centrifuges, centrifugal pumps, centrifugal governors, and centrifugal clutches, and in centrifugal railways, planetary orbits and banked curves, when they are analyzed in a rotating coordinate system