Calculate the speed of the wave whose wavelength is 2 m and having a frequency of 220 Hz?

220 m s^{- 1}

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40 m s^{- 1}

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440 m s^{- 1}

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450 m s^{- 1}

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Solution

The correct option is B $440 m s^{- 1}$
Given $λ = 2 m f = 220 H z$
Now we know , $S p e e d o f t h e w a v e (V) = f λ ⟹ V = 220 \times 2 = 440 m s^{- 1}$

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440 m s^{- 1}

220 H z

440 m s^{- 1}

Solve

(1) Sound wave has frequency 320 Hz and wavelength 0.25 m. How much distance will it travel in 10 second.

[Ans : 800 m.]

(2) A sound wave having certain frequency travels with a speed of 336 m/s and wavelength 3 cm. calculate the frequency. Will it be audible?

[11200 Hz, Yes.]

+ v e

2 π m

\frac{1}{π} H z

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