PHYSICS [1 Mark Question Answer]

Stored form

Energy in action form

Stored form

Energy in action form

Energy in action form

Stored form

SI unit of work is newton metre (Nm). It is also called as joule (J). .

Work = Force * Displacement or W = F x s

No work is done in pushing a wall because even though the force is applied, there is no displacement.

Use compact fluorescent lamps (CFL) and light – emitting diodes (LED) instead of incandescent bulls as CFLs use 80% less energy and LEDs use 90% less electricity than regular bulbs.

Chemical energy into electrical energy.

Gravitational potential energy.

Door bell.

Zero (no work d(}ne).