Work done by an external non-conservative force is equal to change in the mechanical energy of the system.Final M. E - Initial M. E = WIf an external force does no work, then mechanical energy will be...
What is a Spherical Mirror? It is a part of the reflective spherical surface and is spherical in shape. Spherical mirrors consist of a large number of extremely small plane mirrors. They are of two types: Concave...