nuclear fusion
heat
radioactivity
nuclear fission
The energy requirement for an industrial application is 1000 kW. hr. If heat losses account for 20%, the total energy to be supplied is
The energy stored in a watch spring is
The enormous amount of energy released in an explosion of an atomic bomb is due to the
The fibre of the electric bulb is formed.
The filament of an electric lamp becomes white hot but the lead-in wires holding the filament are only slightly heated because they
The filament of electric bulb is made up of:
The final image in a simple microscope is
The first step to getting output from a laser is to excite an active medium. What is this process called?
The flow of thermal energy is called
The flying of birds is a proof of Newtons
