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if the intensity of a sound beam remains unchanged while the beam area is reduced in half, what has happened to the power?

Respuesta :

Neetoo

If the intensity of a sound beam remains unchanged while the beam area is reduced in half, the power will also be Halved.

As intensity = Power / area

I1 = P1 / A1

I2 = P2 / A2

If I1 = I2                        and                          A2 = A1 / 2

I = P1 / A1                                                      I = P2 / (A1/2)

I = P1 / A1                                                       I = 2 P2 / A1

P1 = I A1                                                        P2 = I A1 / 2

P2 = P1 /2 = Halved

The complete question is attached.

You can also learn about intensity from the following question:

https://brainly.com/question/17323212

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