Question

Answer Immediately !

Answer 1

Answer:

(i) Identify the sounds with same loudness.

A and B are the sounds with same loudness.

We know that intensity of a wave is directly proportional to the square of the amplitude.

The intensity determines the loudness.

Hence, higher the amplitude, higher is the loudness.

So, as A and B have same amplitude, the sounds have same loudness.

(ii) Identify the sounds with same pitch.

B and C are the sounds with same pitch.

A higher frequency sound is heard as higher pitch.

Frequency is the number of waves passing a point in unit time.

As B and C have same frequency, the pitch is same.

(iii) Identify the shrillest sound.

Shrillest sound is the high pitched sound.

A has high pitch, so the shrillest sound is A.

(iv) Identify the softest sound.

Softest sound is the one having low pitch.

C is the softest sound.