Q. How is r.m.s. voltage of a.c. related to peak value of a.c. voltage?

Q. How is Zener diode used as voltage regulator?

Q. Mention three applications of total internal reflection of light.

Q. What is magnetic susceptibility? For which material is it low and positive?

Q. Write the truth table of logic OR gate.

Q. Who predicted the existence of electromagnetic waves? Give the wavelength range of electromagnetic spectrum.

Q. Give three characteristics of photon.

Q. What is wavefront of light waves?

Q. State and explain Coulomb's law in electrostatics.

Q. State and explain Lenz's law for induced e.m.f.

Q. Draw. Wheatstone's bridge circuit and write the condition for its balance.

Q. State Gauss law in electrostatics. Using the law derive an expression for electric field due to a uniformly charged thin spherical shell at a point outside the shell.

Q. Write three uses of cyclotron.

Q. Derive the expression for magnetic field at a point on the axis of a circular current carrying loop.

Q. Why there is need for modulation?

Q. Explain the construction of transformer. Mention its principle.

Q. Draw the pattern of magnetic field lines for a bar magnet.

Q. State the radioactive decay law.

Q. What are
i) Magnetic declination
ii) Magnetic dip
iii) Horizontal component of earth's magnetic field
at a place?

Q. Give the bandwidth of TV signal for transmission.

Q. Derive the expression for potential energy of a system of two charges in the absence of the external electric field.

Q. With the help of a circuit diagram, obtain the expression for equivalent resistance of two resistors connected in parallel.

Q. Write the SI unit of charge.

Q. Explain Malus law for polaroids.

Q. Give the expression for energy stored in an inductance coil carrying current.

Q. Write any two types of electron emission.

Q. What is the nature of force between two parallel conductors carrying currents in the direction?

Q. Define mobility of electron.

Q. Mention any two advantages of eddy currents in practical applications.

Q. Obtain the expression for fringe width in the case of interference of light waves.