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.
Compound microscope
Galileo's telescope
Terrestrial telescope
Astronomical telescope
Correct answer is D
No explanation has been provided for this answer.
A cell of internal resistance 0.01Ω can be measured accurately using the
Ohm meter
metre bridge
potentiometer
electroscope
Correct answer is C
No explanation has been provided for this answer.
4.55 x 103V
4.55 x 102V
9.10 x 101V
4.55 x 101V
Correct answer is A
When a charged particle is accelerated across a region of p.d. V Volt, the work done is the product of the charge Q and the p.d. V
i.e. Work done = Q x V
But this work done is equal to the K.E. imparted to the charge given by K.E = 1/2MV2, where V is the velocity of the charge = Q x V = 1/2MV2
∴ p.d V = (1/2MV2)/Q
= 1/2 x 9.1-31 x [4 x 107]2/1.6 x 10-19
= 8 x 9.1 x 102/1.6
= 4550V
= 4.55 x 103V
0.3m
3.0m
3.5m
4.0m
Correct answer is B
V = 72m
U = Magnification = 24
But Magnification = V/U
∴ 24 = 72/U
U = 72/24
U = 3.0m
E/B
EB
B/E
E - B
Correct answer is A
No explanation has been provided for this answer.