18. What causes reverberation?
a) Interference
b) Diffraction
c) Refraction
d) Reflection
19. Both light and sound waves:
a) Can be diffracted
b) Can be polarized
c) Can travel in vacuum
d) Are electromagnetic waves
Answers
Answered by
7
Answer:
18:- Reflection of sounds on hard surface.
option d:- Reflection.
19:- can be diffracted.
Explanation:
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0
Answer: c
Explanation:
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