Current Electricity — Physics STD 10 — Question

When a tuning fork, struck by a rubber pad, is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column. Name the above phenomenon. How does the frequency of the loud sound compare with that of the tuning fork? State the unit for measuring loudness.

Write down the approximate range of temperature at which water boils in a pressure cooker.

State the factor that determine the pitch of a note.

State the energy transformation on the following:
Electricity is obtained from solar energy.

Name the forms of energy which a wound-up watch spring possesses.

Name the energy changes for the following:
bicycle brakes

Give two characteristic of a high tension wire.

Why is the electric power from the generating station transmitted at high voltage?

What is meant by power?

Write the type of energy possessed in the following case:
A wound-up spring