Question

Two waves of the same amplitude superimpose to produce two beats per second. What is the ratio of minimum loudness to that of one of the waves?

Options

• ∞

• 0

• 1

• -1

Answer 1

0

Explanation:

Intensity ∝ (amplitude)²

Let the constant amplitude of each wave be 'a'.

At the minimum loudness, the amplitude is zero (ideally)

∴ Ratio = 0 : a = 0