Question

Sources of sound and observer are moving towards each other, the observer will hear ___________

(a) High frequency, low wavelength

(b) Low frequency, low wavelength

(c) High frequency, low wavelength

(d) Low frequency, high wavelength

The question was posed to me during an internship interview.

This interesting question is from Sounds and Waves in division Waves of Engineering Physics I

Answer 1

Right answer is (c) High frequency, low wavelength

Best explanation: When source and observer approach each other, frequency of sound increases while wavelength decreases.