List of practice Questions

The angle between magnetic meridian and geographical meridian is called
The radius of curvature of each surface of a biconvex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length of the lens is
Which physical quantity will be the same for an electron and a photon of the same wavelength?
The function of moderator in nuclear reactor is to
The impurity element used for p-type semiconductor is
Diode is used as
The net charge on a charged capacitor is
The motion of an electron inside a conductor is
The total electric flux coming out from stationary unit positive charge in air is
The force, acting on per unit charge is called
Quantisation of charge indicates that
Electric field lines provide information about
The width of diffraction fringes is .......... to the width of interference fringes.
Light year is equal to
If any ammeter is shunted, then the total resistance of the circuit
The temperature coefficient of a semi-conductor is
If T is time period and V is maximum speed of a charged particle in cyclotron, then
Van de Graaff generator is an electrostatic machine which produces
S.I. unit of permittivity is
In visible spectrum, which colour has larger wavelength ?
The nucleus of any atom is made up of
The phase-difference between current and voltage in only capacitive alternating current circuit is
Which one of the following electromagnetic radiations has minimum wavelength ?
The binary equivalent of 25 is
When current in a coil changes from 5A to 2A in 0.1s then average voltage of 50V is produced. The self-inductance of the coil is