Question

If microwaves of wavelength 1.5 cm then find the energy of photon.

Answer 1

Wavelenght = 1.5 cm =
$15 \times {10}^{ - 3} m$

h = planks constant =
$6.626 \times {10}^{ - 34}$

c = speed of microvave i.e.
$3 \times {10}^{8}$

For calculations refer to the image attached.

Hope it helps!!!