Q. Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

Q. State and explain Biot-Savart Law.

Q. Derive an expression for the intensity of the electric field at a point on the axial line of an electric dipole.

Q. What are the limitations of Bohr's theory of a hydrogen atom?

Q. Describe the ways in which Eddy currents are used to advantage.

Q. What is "Photoelectric Effect"?

Q. Classify the following materials with regard to magnetism:
Manganese, Cobalt, Nickel, Bismuth, Oxygen and Copper

Q. Define power of a convex lens. What its units?

Q. What is p-type semiconductor? What are the majority and minority charge carries in it?

Q. How do you determine the resolving power of your eye?

Q. Distinguish between Ammeter and Voltmeter.

Q. What type of transformer is used in a $6V$ bed lamp?

Q.

Q. What are the Cathode Rays?

Q. Define focal length of a concave mirror. Prove that the radius of curvature of a concave mirror is double its focal length.