The contraction of muscle of shortest duration is seen in

At which point does the line $\frac{x}{a} + \frac{y}{b} = 1$ touch the curve $y = b e^{-x/a}$?

Which of the following features of genetic codes allow bacteria to produce human insulin by recombinant $\text{DNA}$ technology?

The height of the cone of maximum volume inscribed in a sphere of radius $R$ is

The mutual inductance of a pair of coils,each of $N$ turns,is $M$ henry. If a current of $I$ ampere in one of the coils is brought to zero in $t$ seconds,the $emf$ induced per turn in the other coil,in volts,will be

The $9^{th}$ pair of cranial nerves in a frog is: