At present the population of a village is P and if rate of increase of...

Which layer of atmosphere has the greatest density? (a) Troposphere (b) Stratosphere (c) Mesosphere (d)...

The P – V graph of Boyle’s Law related to gas is

The relation between molecular mass (M) and vapour density (D) of gaseous substance is (a)...

If the radius of curvature of a concave mirror is 20 cm, then focal length...

The wavelength of which of the following is greater than that of visible light? (a)...

Dentists use (a) convex mirror (b) convex lens (c) concave mirror (d) concave lens

The charge of an electron is (a) -3.2 × 10-19C (b) -1.6 × 10-19C (c)...

If the resistance (R) of the conductor and time of flow of current in the...

If 12 C of charge flows through a conductor for 2 minutes, the electric current...