1. Periodic water waves are produced in a ripple
tank. The distance between the first and the
fifth wave crests is 36cm. What is the
wavelentgh of the waves?
2. A stroboscope having 4 slits is rotated 12
times in 2 seconds to observe a stationary
wave pattern with true wavelentgh. The
wavelength of the waves is 5 cm. What is the
speed of the waves?
3. A wave source produces 20 complete waves
in 5 seconds. When the waves are observed
by a stroboscope having 4 slits, the wave
pattern is observed to be stationary. What is
the frequency of the stroboscope?
6. A ripple tank is divided
into three regions. A
straight pulse starts
from region I and
travels through the
other regions. The
appearance of the
pulses in these regions are given in the figure.
What is the relation between the depth of
these three regions?
7. The top view of a ripple tank is given in the
following figure. Pulses are produced by a
wave generator at side A-D. The lentgh of the
legs A and B is greater than that of C and D.
Draw the shape of the periodic pulses.
4. A straight pulse moves from
deep region into shallow region
in a ripple tank as shown in the
figure. Draw the appearance of
the pulse in the shallow region.
8. The figure shows the passage pf pulses from
deep medium into shallow medium. Draw the
shape of the pulses in shallow medium.
5. The diagram represents a
straight pulse passing from
region M to region P in a
ripple tank. Compare the
speeds of the pulse in
region P and M.