What are the risks and benefits of using radiations? - OCR 21C

1

Which of these groups has the highest frequency?

2

What happens to the frequency and wavelength of electromagnetic waves as the wave energy increases from radio to gamma?

3

Which of these pairs of electromagnetic waves are used to cook food?

4

Which of these statements is true regarding visible light?

5

Which of these statements about ultraviolet radiation is NOT true?

6

Which of the following are most harmful to bodily tissue?

7

Which electromagnetic wave is used in satellite communication?

8

Which of the following is true for X-rays?

9

At what speed do electromagnetic waves travel through a vacuum?

10

Which type of electromagnetic radiation is emitted from the nucleus of atoms?