Question

4. Which of the following electromagnetic radiation is used for viewing objects through fog?
a) microwave
b) gamma rays
c) X-rays
d) infra red rays
​

Answer 1

Answer:

We have to arrange electromagnetic waves in order of increasing wavelength

Wavelength of γ rays=<10

−3

nm

Wavelength of micro waves = 0.1mm to 1mm

Wavelength of X rays=1nm to 10

−3

nm

Wavelength of Radio waves=>0.1m

Smaller wavelength wave=γ rays

Larger wavelength wave=Radio waves

γ rays < X rays < Microwave rays < Radio waves