Monochromatic
Polychromatic
Colourless
None of these
In a diesel engine the high temperature needed to ignite the fuel is achieved by-
In a filament type light bulb most of the electric power consumed seems as
In a medium heat flows by the actual movement of the particles of the medium. This process of heat transmission is known as
In a period from Li to F, ionisation potential
In a photocell light energy is converted into
In a railway track, two rails are joined end to end with a gap in between themas
In absorption of insolation, the most significant part is played by
In an electric kettle water becomes hot by
In an ordinary dry cell, the electrolyte is
In arc welding, Argon is used as of its
