The main structural component of a virus is:

Reserpine is obtained from ...... .

If a body is moving in a circle of radius $r$ with a constant speed $v$,its angular velocity is

$\sin ^{-1}\left(\sin \frac{7 \pi}{6}\right) = $

What is the electronic arrangement of a metal atom/ion in an octahedral complex with a $d^4$ configuration,if $\Delta_0 < P$ (pairing energy)?

$A$ block of mass $m=25 \ kg$ sliding on a smooth horizontal surface with a velocity $v=3 \ ms^{-1}$ meets a spring of spring constant $k=100 \ N/m$ fixed at one end as shown in the figure. The maximum compression of the spring and the velocity of the block as it returns to the original position are respectively: