Q. Define electric potential due to a point charge and arrive at the expression for the electric potential at a point due to a point charge in its vicinity.

Q. Mention any two factors on which the capacitance of a parallel plate capacitor depends.

Q. State Faraday's law of electromagnetic induction.

Q. Using Huygen's principle for refraction of a plane wave, arrive at Snell's law of refraction.

Q. What is the output of the combination?

Q. Write the expression for magnetic potential energy of a magnetic dipole kept in a uniform magnetic field and explain the terms.

Q. Give any two applications of X-rays.

Q. Draw the diagram representing the schematic arrangement of the Geiger-Marsdon experimental setup tor the alpha particle scattering.

Q. Draw a block diagram of a generalized communication system.

Q. Derive an expression for magnetic field strength at any point on the axis of a circular current carrying loop using Biot-Savart's law.

Q. Write Bohr's postulates for the hydrogen atom model.

Q. The decay of a proton to a neutron is possible only inside the nucleus. Why?

Q. Write any three distinctions between p-type and n-type semiconductor.

Q. Give three properties of electric charge.

Q. What is 'depletion region' in a semi conductor diode?

Q. What is hysteresis? Define the terms 'coercivity' and 'retentivity' of a ferromagnetic material.

Q. Define 'drift velocity' of free electrons.

Q. Derive the expression for the half-life of a radio active nuclide.

Q. Three lenses of power $+1.5D$ and $-0.5D$ are kept in contact on their principal axis. What is the effective power of the combination?

Q. Arrive at the expression for the impedance of a series $LCR$ circuit using phasor diagram method and hence write the expression for the current through the circuit.

Q. Obtain the expression for the effective emf and the effective internal resistance of two cells connected in parallel such that the currents are flowing in the same direction.

Q. Define magnetic 'declination' and 'dip' at a place.

Q. State Kirchhoffs law of electrical networks.

Q. State Ampere's circuital law and arrive at the expression for the magnetic field near a straight infinite current carrying wire.

Q. Write any two characteristics of nuclear forces

Q. Give an application of a cyclotron.

Q. Mention one way of power loss in transformer.

Q. If the peak value of an A.C. source is $4.24A$, what is its root mean square value?

Q. What is an equipotential surface?

Q. What is 'myopia'? How can it be rectified?