A student in Trinidad investigating sound waves uses a signal generator connected to a loudspeaker. The signal generator is set to produce a note of frequency 256 Hz. The speed of sound in air is 340 m/s. What is the wavelength of the sound wave produced?

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Question

A student in Trinidad investigating sound waves uses a signal generator connected to a loudspeaker. The signal generator is set to produce a note of frequency 256 Hz. The speed of sound in air is 340 m/s. What is the wavelength of the sound wave produced?

Accepted Answer

1.33 m — 33 m. Award 1 mark for correct answer. Using v = fλ, λ = v/f = 340/256 = 1.33 m. A is incorrect due to arithmetic error. C is incorrect because it subtracts instead of divides (340 - 256). D is incorrect because it multiplies v × f instead of dividing.

Answer

84 m

Answer

1.33 m

Answer

87040 m

Answer

0.75 m

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