Question

In: Physics

what type of electromagnetic radiation are waves with wavelengths of: a) 3cm, b) 650nm, c) 1.2fm?

what type of electromagnetic radiation are waves with wavelengths of: a) 3cm, b) 650nm, c) 1.2fm?

Solutions

Expert Solution

Frequency of radiation, f = c/
Where c is the velocity of light and is the wavelength.
a)
f = (3 x 108)/(3 x 10-2)
= 1010 Hz
This comes under the spectrum of radio waves. Its range is from 3 kHz to 300 GHz

b)
f = (3 x 108)/(650 x 10-9)
= 4.61 x 1014 Hz
This comes under the spectrum of visible light (Frequency range is from 430 to 770 THz)

c)
f = (3 x 108)/(1.2 x 10-15)
= 2.5 x 1023 Hz
This corresponds to gamma rays. Its frequency starts from 3 x 1019 Hz


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