Q.

Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength.

A. Microwave, infrared, visible. X-rays
B. X-rays, visible, infrared, microwave
C. Visible, infrared, microwave, X-rays
D. X-rays, infrared, visible, microwave
Answer» D. X-rays, infrared, visible, microwave
Explanation: The Electromagnetic spectrum in order of decreasing energy, thus increasing wavelength : Gamma Rays-wavelength: 0.01 nm; X-rays -1 nm ; Ultra-violet Rays-0.1 micrometres ; Visible Light-Red light : 0.7 micrometres, Violet Light : 0.4 micrometres ; Infrared Radiation-0.01 mm ; Microwaves -less than 10 cm, usually lem ; Radiowaves- Long, Medium and Short Waves : 1am-10 m ; and Very High Frequency (VHF) and Ultra High Frequency (UHF): 10 m-10 cm.
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