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. Mass
II. Density
III. Temperature
IV. Nature of substance
which of the above affect diffusion?
I and II only
I,II and IV only
II, III and IV only
I, II, III and IV
Correct answer is C
Rates of diffusion of a substance generally depend on density temp. and nature of substance II,III and IV
I and II only
I and III only
II and III only
III and IV only
Correct answer is C
Increase in pressure generally raises the boiling point but but lowers the melting point. II and III
30°
25°
15°
10°
Correct answer is D
Electricity heat energy supplies by the heater = lvt = 3.5 x 200 x (2 x 60) = 84000j.
and this heat is supplied to the 2 kg of the water MC ∆ t = 84000
2 x 4200 x ∆ t = 84000
∴ ∆t = (84000)/8400 = 10°c
∴ increase in temp. of water = 10°c
I only
II only
I and II only
II and III only
Correct answer is B
Using the liquid of high volume expansively II only
A clinical thermometer is different from other mercury in glass thermometers owing to
the constriction on its stem
the grade of mercury used in it
its long stem
its wide range of temperatures
Correct answer is A
No explanation has been provided for this answer.