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.
25%
33%
75%
82%
Correct answer is C
Relative
Humidity = (S.V.P. of water at dew point)/S.V.P of water at air temperature =(18)/24 x 100% = 75%
850 JK-1
750 JK-1
650 JK-1
500 JK-1
Correct answer is B
Heat supplied = Heat gained
P x t = C ∆ Ø
(25 x 5 x 60)/10 = 750 JK-1
508 cm3
516 cm3
608 cm3
616 cm3
Correct answer is D
V1 = 600cm3, T1 = 27 = 273 = 300k
T2 = 35 + 273 = 308K, V2 = ?
(V)1/T1
= (V)2/T2 = V2
= (V)1/T1 x X T2
= (600 X 308)/300 = 616 cm3
the clock gians time
the accuracy of the clock is not affected
the clock losses time
the clock stops working
Correct answer is C
The elastic potential energy of the balance wheel reduces as the wheel expands, therefore the clock will loose time.
The thermometric properties of a thermocouple is the change in?
equivalent resistance
electromotive force
colour
pressure
Correct answer is B
Temperature difference between hot and cold junctions of thermocouple is proportional to the emf. generated