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Question
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :
Options
2
0.2
20
200
Solution
Given: Velocity of the wave = 340 m/s
Frequency of the wave = 1,700 Hz
So, we can find the wavelength by `lambda = v/f`
where λ is the wavelength, ν the velocity, and f the frequency.
So,
`lambda = 340/1700` m
= 20 cm
(c) 20 cm.
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