An engineer in a concert hall measures the frequency of a musical note as 440 Hz and its wavelength as 0.77 m. What is the speed of sound in the concert hall?

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Question

An engineer in a concert hall measures the frequency of a musical note as 440 Hz and its wavelength as 0.77 m. What is the speed of sound in the concert hall?

Accepted Answer

339 m/s — Award 1 mark for correct use of v = fλ = 440 × 0.77 = 338.8 ≈ 339 m/s. B (440 m/s) incorrectly uses frequency as the answer. C and D result from calculation errors or incorrect formula application.

Answer

339 m/s

Answer

571 m/s

Answer

440 m/s

Answer

572 m/s

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