Question

Multiple Choice Questions
1.
The audible sound range for human is
A. 0-20Hz B. 20Hz-20000Hz C. 20Hz-2000 Hz D. 100Hz-10,000Hz
2.
When a sound wave transmitted through a medium, its
is transported
from one place to another.
A. mass
B. energy
C. velocity
D. density
3. To make the the experiment for verifying the law of reflection of sound successfully
...........should be used as an reflector.
A. Sponge podded board. B. Clean white cloth
C. Perforated wooden board D. Polished wooden board​

Answer 1

Answer:

1 option c

2 option c

Explanation:

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