The set containing only scalar quantities is (A) Temperature gradient, specific heat and latent heat (B) Electric intensity, Electric potential and Electric capacity (C) Pole strength, permeability and permittivity (D) Torque, Angular acceleration and linear momentum

Among the quantities, density (p), temperature (T), heat capacity (C_(p)) , volume (V) and pressure (P), a set of intensive variables are-

Which of the following sets have different dimensions? (A) Pressure, Young's modulus, Stress (B) emf, Potential difference, Electric Potential (C) Heat, Work done, Energy (D) Dipole moment, Electric flux, Electric field

Pick out the two scalar quantities in the following list: force, angular momentum, work, current, linear momentum, electric field, average force, angular momentum, work, current , linear momentum, electric field, average velocity, magnetic moment, relative velocity.

A small quantity mass m, of water at a temperature theta ("in " ^(@)C) is poured on to a larger mass M of ice which is at its melting point. If c is the specific heat capacity of water and L the specific heat capacity of water and L the specific latent heat of fusion of ice, then the mass of ice melted is give by

(a) what is menat by the heating effect of current ? State three factors on which the heat produced in a wire by an electric current depends. (b) Explain why, through the heating element of an electric heater glows, but its connecting cord does not l glow. ( c) An electric geyser of resistance 20 Omega takes a current of 5 A. calculate the heat produced in 2 minutes. (d) Name the commercial unit of electric energy. How many joules are equal to this unit ?

Regarding linear momentum of a body (a) It is a measure of quantity of motion contained by the body (b) Change in momentum is the measure of impulse (c ) Impulse and acceleration act in opposite direction to the change im momentum (d) In the case of uniform circular motion the linear momentum is conserved .