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.
meter per second
seconds
hertz
farad
Correct answer is C
The unit of frequency is hertz, abbreviated Hz.
3.3°C
7.0°C
13°C
30.0°C
Correct answer is D
Let the room temperature be X.
We have, \(\frac{3-0}{10-0} = \frac{X-0}{100-0}\)
\(\frac{3}{10} = \frac{X}{100}\)
\(X = \frac{3 \times 100}{10}\)
= 30°C
0.125Hz
1.25Hz
7.50Hz
8.00Hz
Correct answer is B
10 complete oscillations = 8.0s
1 complete oscillation (period) = \(\frac{8}{10}\)s
Frequency = \(\frac{1}{period}\) = \(\frac{1}{0.8} = 1.25Hz\)
Which of the following factors does not increase the rate of evaporation of water in a lake?
Increase in the pressure of the atmosphere
Rise in temperature
Increase in the surface area of the lake
Increase in the speed of the wind
Correct answer is A
The rate of evaporation is increased by the lowering of atmospheric pressure and not its increase. Every other factor stands, for the increase of evaporation process.
The ice point on the absolute scale of temperature is
0K
32K
100K
273K
Correct answer is A
The absolute zero of the scale of temperature being the ice point of the absolute scale of temperature is 0K, which is -273°C.