Question

Arrange the following types of radiations in increasing order of frequency: 
(a) radiation from the microwave oven 
(b) amber light from a traffic signal 
(c) radiation from FM radio 
(d) cosmic rays from outer space and (e) X-rays.

Answer 1

Concept Used:

Frequency of electromagnetic radiations increases in the order:

Radio waves < Microwaves < Infrared < Visible light < Ultraviolet < X-rays < Gamma rays < Cosmic rays

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Identification of given radiations:

(a) Radiation from FM radio → Radio waves
(b) Radiation from microwave oven → Microwaves
(c) Amber light from traffic signal → Visible light
(d) X-rays → X-rays
(e) Cosmic rays from outer space → Highest frequency radiations

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Arrangement in increasing order of frequency:

FM radio < Microwave oven < Amber light < X-rays < Cosmic rays

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Final Answer:

FM radio < Microwave oven < Amber light < X-rays < Cosmic rays