Explain and define dispersive power of a transparent material. Obtain its expressions in terms of angles of deviation and refractive indices.
OR
Define Dispersive Power. Derive an expression for the same.

Define angular dispersion for a prism. Obtain its expression for a thin prism.Relate it with the refractive indices of the material of the prism for corresponding colours. OR Derive an expression for angular dispersion and mean deviation.

Define Half-life of radioactive material. Derive an expression for half-life period

Define period of conical pendulum and obtain an expression for its period.

Define period of conical pendulum and obtain expression for its period.

Define the expression for power. State its unit.

Define coefficient of thermal conductivity. Derive its expression.

Define escape velocity. Derive an expression for the escape velocity of an object from the surface of the earth. OR Define escape velocity of a body at rest on the earth's surface. Obtain an expression for the same and show that it is independent of the mass of the body. OR Define escape velocity of the body. Obtain an expression for the escape velocity when the body is at rest on the surface of the earth and show that it is independent of the mass of the body.

Explain Bulk Modulus, derive an expression for the same. Define compressibility.

A spectrum is formed by a prism of dispersive power omega . If the angle of deviation is delta . Then the angular dispersion is

Define conical pendulum. Obtain an expression for the angle made by string of conical pendulum with vertical.Hence deduce the expression for linear speed of bob of the conical pendulum.