GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the longest and least dangerous of all the electromagnetic wavelengths?
A
X-Rays
B
radio waves
C
microwaves
D
gamma rays
Explanation: 

Detailed explanation-1: -Radio waves have the longest wavelengths and lowest frequencies of all electromagnetic waves. They also have the least amount of energy.

Detailed explanation-2: -Because of their very high frequencies, gamma rays have more energy than any other electromagnetic waves. Sources of gamma rays include radioactive atoms, nuclear explosions, and stars. Gamma rays from space are absorbed by Earth’s atmosphere. Gamma rays can destroy living cells, produce mutations, and cause cancer.

Detailed explanation-3: -In general, the shorter the wavelength, the greater the danger to living things. Although longer wavelengths also have their hazards, very short wavelengths, such as X-rays and gamma rays, can easily damage living tissue.

There is 1 question to complete.