The dominant mechanism for the motion of charge carriers in forward and reverse biased silicon $P-N$ junction are:

If a force $F$ is applied on a body and it moves with a velocity $v$,the power will be

If $(2,-1,3)$ is the foot of the perpendicular drawn from the origin to the plane, then the equation of the plane is

$A$ film of water is formed between two straight parallel wires of length $10\,cm$ each,separated by $0.5\,cm$. If their separation is increased by $1\,mm$ while still maintaining their parallelism,how much work will have to be done? (Surface tension of water = $7.2 \times 10^{-2}\,N/m$)

Compound squamous epithelium is found in