Assertion : When we start filling an empty bucket with water, the pitch of sound produced goes on decreasing.
Reason : The frequency of man voice is usually higher than of woman.

When we start filling an empty bucket with water, the pitch of sound produced goes on changing. Why?

“During the filling of an empty bottle with water, the pitch of the sound heard goes on changing." Why?

Generally, a woman's voice has a higher pitch than a man's voice.

Assertion : In our houses when we start switching on different light buttons, main current goes on increasing. Reason : Different connections in houses are in parallel. When we start switching on different light buttons, then net resistance of the circuit decreases. Therefore, main current increases.

Assertion : In our houses when we start switching on different light buttons, main current goes on increasing. Reason : Different connections in houses are in parallel. When we start switching on different light buttons, then net resistance of the circuit decreases. Therefore, main current increases.

Assertion (A) : A child produces a higher pitched sound compared to that of an adult Reason (R): Pitch depends on the frequency of sound.