The plant part which consists of two generations,one within the other,is:

Which of the following is not correctly matched?

In a Ruby laser, the colour of laser light is due to ______ atom.

$A$ magnet of length $10 \text{ cm}$ and magnetic moment $1 \text{ Am}^2$ is placed along side $AB$ of an equilateral triangle $ABC$. If the length of the side $AB$ is $10 \text{ cm}$,find the magnetic induction at the point $C$. (Given $\mu_0 = 4\pi \times 10^{-7} \text{ Hm}^{-1}$)

In a transformer,the number of turns in the primary coil is $140$ and that in the secondary coil is $280$. If the current in the primary coil is $4 \, A$,then the current in the secondary coil is.....$A$.

The smallest positive root of the equation $\tan x - x = 0$ lies in the interval: