What are the Bohr's Postulates for the hydrogen atom? Write down the following for electrons in the ground state of hydrogen atom:
(i) Binding energy
(ii) Angular momentum
(iii) Total energy
By drawing a ray diagram, explain the formation of image in a compound microscope. Establish the formula for magnifying power for it.
What are electromagnetic waves? Draw their propagation diagram. Show the electric field amplitude and magnetic field amplitude in the propagation diagram.
Explain the difference between the following substances with the help of examples:
(i) Paramagnetic
(ii) Diamagnetic
(iii) Ferromagnetic