Question

THE TVS SCHOOL
ACOUSTICS
WORKSHEET-V
CLASS X
I. FILL IN THE BLANKS
1. A wave in slinky travelled two and fro in 5 seconds the length of the slinky is 5 m.
will be the velocity of the wave.
2. A source vibrates number of times in a minute if its frequency is 100 Hz.
3. The sound are produced before the main shock wave of earthquake.
4. A stone is thrown in a pond. 12 full ripples are produced in 1 second. If the distance
between a crest and a trough is 10 cm, the wavelength and the velocity of the wave will
be
and respectively.
5. The whistle of an approaching engine appears to be than that of a receding
engine​

Answer 1

Answer:

pls say it in simple words