sound wave of frequency 600 Hz travels in air with speed 300 ms'. Now this sound wave refracts in a medium
here it's speed becomes 900 ms?
5. Wavelength of wave in air
(A) 30 cm
(B) 20 cm
(C) 50 cm
(D) None of these
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Answer:
answer is C
Explanation:
since v=f×λ
330=f×3.3
f=100 Hz
A = 100/2
answer is 50cm.
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