Question

The power of a sound from the speaker of a radio is

Answer 1

Answer:

The power of sound from the speaker of a radio is 20 milliwatt. By turning the knob of the volume control the power of the sound is increased to 400 milliwatt.

Answer 2

• The power of a sound from the speaker of a radio is 20mW.
• Power is generally calculated in watts.
• Sound power is also called as the acoustic power
• It is the rate at which sound energy is emitted, reflected, transmitted or received, per unit time.
• Turning the volume control knob the power of the sound is increased to 400 mili watts.