Question

Give the MKS units for each of the following quantities
(a) Young's modulus,
(b) Magnetic induction,
(c) Power of a lens.

Answer 1

(a) Young's modulus $=\frac{F/A}{\Delta l/l}$
Hence, the MKS units are $N/m^2$.
(c) Power of a lens (in dioptre) $=\frac{1}{f(\text{ in metre ) }}$