Explanation:
The speed of a wave is given by :
......(1)
(i) Here, the wavelength of a sound wave in air reduces by a factor of 3. Equation (1) becomes :

Wavelength and frequency are inversely proportional to each other. So, if wavelength of a sound wave in air reduces by a factor of 3, then the frequency will increases by a factor of 3.
(ii) It remains the same.
Answer:
no answer
Explanation:
the question does not sk what to find
Answer:
option B is the correct answer
Explanation:
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Answer:
False
Explanation:
I learned it the hard way trust me T^T