Question

1. As the __________ increases , the energy of electromagnetic radiation decreases.

   	A.	frequency
   	B.	speed of light
   	C.	wavelength
   	D.	altitude

Answer 1

Energy of a electromagnetic radiation can be expressed as

  E = h $\nu$ = (h *c)/$\lambda$

Where h= plank's constant

  $\nu$ = frequency of radiation

c = velocity of electromagnetic radiation

$\lambda$ = wavelength

From the above equation it can be concluded that energy of emr is inversely proportional to wavelength and hence

As the wavelength increases, the energy of electromagnetic radiation decreases.