Question

STATE TRUE OR FALSE:
1) When the amplitude of vibration is large, the sound produced as well
2) Sound can't travel through solid.
3) A short flute will produce the sound of lower pitch than a long flute.
4) Speed of sound is more in the air than in water.
FILL IN THE BLANKS:
1) Two important properties of sound are
and
2) Bat uses
sound to catch its preys.
3) Time taken to complete one oscillation is called
of the sound wave.
4) The average rate of oscillations of a simple pendulum is 200 oscillations per seconds. I
time period in milliseconds is
CHOOSE THE CORRECT ANSWER:
1) The frequency of ultrasonic sound is​

Answer 1

Answer:

1 true

2 true

3 false

4 true

Answer 2

Answer:

1 is true

2 is false

........