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.
Polarization
Local action
Formation of hydrogen electrode
Increase in the resistance of the cell
Generation of less current by the cell
Correct answer is B
No explanation has been provided for this answer.
Calculate the rate at which energy is used up in the circuit illustrated by the diagram
0 W
2 W
4 W
8 W
16 W
Correct answer is C
\(R = \frac{R_1 X R_2}{R_1 + R_2}\)
= 1
\(E = I^2R = 2^2 x 1 =4W\)
The cap will be positively charged and the negatively charged leaves will diverge
The cap will be negatively charged and the positively charged leaves will diverge
The cap and the leaves will be positively charged
The cap and the leaves will be negatively charged
The leaves will not diverge because the cap has been earthed
Correct answer is C
No explanation has been provided for this answer.
340.0ms-1
33Oms-1
170ms-1
85.0ms-1
42.5ms-1
Correct answer is A
L = λ/4; λ= 4 = 4m
v = fλ = 85 x 4 = 340ms-1
Which of the following statements is not true?
Musical notes consist of the combination of sounds of regular frequency
The combination of overtones produced by an instrument determines the quality of the sound
the loudness of sound is determined by its frequency
the pitch of a note depends on the frequency of vibration of the source
Noise can be produced by a combination of sounds of irregular frequency
Correct answer is A
No explanation has been provided for this answer.