The total number of atomic orbitals in the fourth energy level of an atom is .......

The formula of the product formed when sodium thiosulphate solution is added to silver bromide is:

$A$ pair of insectivorous plants is

$A$ wire in the form of a square of side $a$ carries a current $i$. Then,the magnetic induction at the centre of the square is (Magnetic permeability of free space $= \mu_0$)

Select the correct pair from the following.

$A$ motor is used to deliver water at a certain rate through a given horizontal pipe. To deliver $n$-times the water through the same pipe in the same time,the power of the motor must be increased as follows: