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.
Which of following functions is performed by manganese IV oxide in the Lenclanche cell?
control of local action
depolarisation of the cell
regulating current flow in the cell
reduction of the internal resistance of the cell
Correct answer is B
No explanation has been provided for this answer.
evenly distributed over a surface of any shape
concentrate on the inner surface of the conductor
concentrate at the outer flat surface of the conductor
generally concentrated at sharply curved surface
Correct answer is D
No explanation has been provided for this answer.
the friction between the table and the tuning fork generates additional energy
air molecules obsorb sound wave but wood transmit sound waves
the table increases the frequency of the turning fork
a large mass of air is set into vibration by the table
Correct answer is D
No explanation has been provided for this answer.
increase the intensity of sound waves
increases the loudness of the sound waves
reduce the effect of revibration of sound waves
decreases thr frequency of sound waves
Correct answer is C
No explanation has been provided for this answer.
2.062s
0.970s
0.485s
0.242s
Correct answer is C
t = \(\frac{2x}{v} = \frac{2 \times 80}{330} = 0.485s\)