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.
I & II
II & III
III & IV
IV & V
Correct answer is C
As conduction of gases is at low pressure and high voltage, called field or cold cathode emission.
In the molecular explanation of conduction, heat is transferred by the
In the molecular explanation of conduction, heat is transferred by the
Free atoms
Free molecules
Free solids
Correct answer is A
- Conduction is explained in terms of the free electrons.
- Convention is explained in terms of the movement of the fluid involved.
- Radiation is explained in terms of invisible electromagnetic wave
I only
I & II only
I & III only
II & III only
Correct answer is C
I & III only as units are independent of energy equation.
the heat energy is quickly conducted away
the heat capacity has become very large as the substance melts
the heat gained is equal to the heat lost by the substance
all the heat is used to break the bonds holding the molecules of the solid together
Correct answer is D
During the transformation of matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because all the heat is used to break the bonds holding the molecules of the solid together
I only
II only
III only
I & IV only
Correct answer is B
- Friction depends on the nature of the surfaces in contact