What is the role of physics in medical science?

Anaemia can be diagnosed by:

Which value is closest to the wavelength, in meters, for a quantum of light with a frequency of  $8\times {10}^{16}$ per second?

[Given: $\mathrm{c}=3 \mathrm{x} {10}^8 {\mathrm{ms}}^{-1}, \mathrm{h}=6.63 \mathrm{x} {10}^{-34} \mathrm{J}.\sec$]

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Photon of which light has maximum energy?