Physics Past Questions and Answers

Which of the following media allow(s) the transmission of sound wave through them? I. Air II. Liquid III. Solid.

A I only
B II only
C III only
D I and II only
E I, II and III.

Question 442:

Which of the following wave characteristics can be used to distinguish a transverse wave from a longitudinal wave?

A Reflection
B Refraction
C Diffraction
D Polarization
E Interference

Question 443:

A sound note of frequency 250 Hz and wavelength 1.3m is produced at a point near a hill. If the echo of the sound is received 1 second later at the point, how far away is the hill from the point?

A 131.3m
B 162.5m
C 248.7m
D 251.3m
E 325.0m.

Question 444:

The period of a wave is 0.02 second. Calculate its wavelength if its speed is 330 ms^-1

A 6.6m
B 5.0m
C 4.0m
D 3.3m
E 2.0m

Question 445:

An alternating voltage with a frequency of 50Hz has a period of

A 0.02s
B 0.05s
C 0.20s
D 0.50 s
E 50.00s