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CAIE A-Level Physics AS 7.1.5 V F Questions

Use V = fλ to relate wave speed, frequency and wavelength in wave problems.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Use V = fλ to relate wave speed, frequency and wavelength in wave problems.

CAIE A-Level Physics AS 7.1.5 V F Questions question 1

[Maximum number: 1]

The range of frequencies of sound waves emitted by blue whales is 10 Hz to 40 Hz .
The speed of sound in seawater is approximately 1.5 km s−11.5 \mathrm{~km} \mathrm{~s}^{-1}.
What is the approximate range of wavelengths of the sound waves emitted by blue whales?

A

6.7 mm6.7 \mathrm{~mm} to 27 mm

B

3.8 cm to 15 cm

C

6.7 m6.7 \mathrm{~m} to 27 m

D

38 m to 150 m

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