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.
All of the following frequencies are overtones of 320 Hz EXCEPT
960Hz
640Hz
520Hz
1280Hz
1600Hz
Correct answer is C
Overtones are frequency which are multiples of fundamental frequency
Fundamental frequency - f1 = 320Hz
Overtones 320 x 2 = 640Hz
320 x 3 = 960HZ
320 x 4 = 1280Hz
320 X 5 = 1600hZ
567km
410km
594km
500km
600km
Correct answer is D
R2 = 3002 + 4002
R2 = 90000 + 160000
R = \(\sqrt{250000}\)
= 500km
The resistance of a 240V, 60 watt electric filament bulb is
0.25\(\Omega\)
480\(\Omega\)
60\(\Omega\)
240\(\Omega\)
960\(\Omega\)
Correct answer is E
power = IV
power = \(\frac{V^2}{R}\) = 60
= \(\frac{240^2}{R}\)
= 960\(\Omega\)
When a ray of light passes from water to glass, it is
bent away from the normal
bent towards the normal
totally internally reflected
absorbed by the glass
broken into a pure spectrum
Correct answer is B
No explanation has been provided for this answer.
the temperature rises and the ice expand
the temperature remains constant and the volume of the ice decreases
the ice gives out heat as it melts and the temperature decreases
the mass remains constant and the temperature increases
the temperature decreases because some heat is lost
Correct answer is B
No explanation has been provided for this answer.