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

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.