Current Electricity — Physics STD 10 — Question

Give one example when:
Kinetic energy to potential energy.

Explain why Standing passengers are not allowed on the upper deck of a double-decker bus.

A satellite revolves around the earth in a circular orbit. What is the work done by the force of gravity? Give reason.

Write the approximate values of the specific latent heat of fusion of ice.

Under what condition will a set of gears produce a gain in torque.

A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What happens to the mechanical energy after the ball hits the ground and comes to rest ?

State the energy changes in the following case while in use:
an electric toaster.

What do you understand by the change of phase of a substance?

A lens forms an erect, magnified and virtual image of an object. name the device which uses this principle.