In maize,hybrid vigour is exploited by

Rutherford’s scattering experiment is related to the size of the

Consider the following statements $A$ and $B$. Identify the correct choice in the given answers.
$A$. The refractive index of the extra-ordinary ray depends on the angle of incidence in double refraction.
$B$. The vibrations of light waves acquire one-sidedness for both ordinary and extraordinary rays in double refraction.

Which salt is used as a purgative?

Sunken stomata are found in the leaves of

Which of the following is the richest source of protein?