13. One or more of the following types of electromagnetic radiation have no ionizing wavelengths. Which of these types of radiation CAN be ionizing?
i. Infrared ii. Radio wave iii. Ultraviolet rays iv. X-rays
a. i and ii
b. i and iii
c. i, ii, and iv
d. i, iii, and iv
14. Which is more dangerous to humans, high energy ultraviolet radiation or X-ray radiation? a. X-rays
b. high energy ultraviolet radiation
c. both high energy ultraviolet radiation and X-ray radiation
d. none among high energy ultraviolet radiation or X-ray radiation
15. Which is the correct order of arrangement from most ionizing to least ionizing radiation?
a. radio wave, microwave, infrared
b. microwave, infrared, visible light
c. ultraviolet ray, visible light, infrared
d. gamma ray, X-ray, high energy ultraviolet ray​