The ensheathing of muscles is called:

The plates of a parallel plate capacitor are charged up to $200 \ V$. $A$ dielectric slab of thickness $4 \ mm$ is inserted between its plates. Then,to maintain the same potential difference between the plates of the capacitor,the distance between the plates is increased by $3.2 \ mm$. The dielectric constant of the dielectric slab is:

The terminal velocity of a liquid drop of radius $r$ falling through air is $v$. If two such drops are combined to form a bigger drop, the terminal velocity with which the bigger drop falls through air is (ignore any buoyant force due to air).

Which of the following plants are used as green manure in crop fields and in sandy soils?

The number $(101)^{100}-1$ is divisible by

The heat energy absorbed by a system undergoing the cyclic process shown in the figure is: