Question

Which of the following changes when sound is reflected? a) Wavelength b) Frequency c) Speed d) Amplitude​

Answer 1

Answer:

speed

Explanation:

When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction. This phenomenon is called the reflection of sound. During reflection, the frequency, speed and wavelength of the wave do not change.

Answer 2

(d)Amplitude changes when sound is reflected.

What do you mean by the amplitude of a sound?

• The measure of a point in which the particles are vibrating from its equilibrium position when there is a movement of the maximum displacement is called amplitude.
• When the energy of the sound wave is being lost due to the gradual decrease of the amplitude of that sound wave, the condition is said to be in the damping condition of that wave.
• The amplitude of the wave can also be defined as the distance between the wave's mean position and the trough or crest.
• The amplitude of a sound wave is proportional to the loudness of that sound wave.