Oil raise up the wick in a lamp. The principle involves
Oil rises up the wick in a lamp as
On a cold day when a room temperature is 15 degree C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15 degree C, because
On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because :
On a stationary sail boat, air is blown from a fan attached to the boat. The boat
On heating a circular metallic disc with a circular hole at the centre, the diameter of the hole will
On the Kelvin scale, the melting point of ice is
On Which among the given techniques photostate machine works
On which principle does the hydraulic lift works?
Once the active medium is excited, the first photons of light are produced by which physical process?
