Question

Select True or False for the following statements about electromagnetic waves.

1. The sun's radiation is most intense in the visible region.

2. X-rays can be produced in transitions involving inner electrons in an atom.

3. Gamma rays travel in vacuum at the same speed as the visible light.

4. Blue light has a longer wavelength than red.

5. Ultraviolet radiation causes common sunburn.

6. A vertical automobile antenna is sensitive to electric fields polarized horizontally.

7.Radio waves have wavelengths longer than 1 m.

Answer 1

A. True

Reason  since we can see the sun, the most intense radiation is in the visible spectrum.

B. True

C. True

X-Rays, gamma rays, ultra-violet and infra-red are all the same form of energy as visible light, just more or less energetic. They all travel at the same speed in a vacuum.

D.  False,

From an electromagnetic spectrum chart, red has a longer wavelength than blue.

E. True

F. False

A vertical automobile antenna is sensitive to electric fields polarized vertically

G, True

By spectrum chart.