The energy is transferred from one place of another:
An object is 14 cm in front of a convex mirror. The image is
5.8 cm behind the mirror. What is the focal length of the mirror:
Ripple tank is an instrument which is used to study the
characteristics of:
When a positive charge of 2 coulombs is placed at a point in
an electric field, it experiences a force of 6N. The intensity of electric
field at this point is:
In compound microscope, the objective have focal length than
eye-piece:
J.J Thomson observed deflection of cathode rays in:
