Question

Which electromagnetic waves is considered to be harmful,prolong exposure to this causes skin cancer?
A.Infrared Rays
B.Ultraviolet Rays
C.X-Rays
DGamma Rays

Answer 1

B. Ultraviolet Rays

Explanation:

Electromagnetic radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize atoms or break chemical bonds. Extreme ultraviolet and higher frequencies, such as X-rays or gamma rays are ionizing, and these pose their own special hazards: see radiation poisoning.

The most common health hazard of radiation is sunburn, which causes between approximately 100,000 and 1 million new skin cancers annually in the United States.

Claims of harm from low levels of non-ionizing radiation (sometimes described as "electrosmog") are unsupported by science.