1. Light is an electromagnetic wave. Which characteristic is common in all electromagnetic waves in vacuum?
a. frequency
b. wavelength
c. speed
d. amplitude
2. On which the intensity of light depends?
a. frequency
b. how much energy it has
c. how much of it is absorbed
d. wavelength
Answers & Comments
1. Light is an electromagnetic wave. Which characteristic is common in all electromagnetic waves in vacuum?
a. frequency
c. speed
d. amplitude
2. On which the intensity of light depends?
b. how much energy it has
c. how much of it is absorbed
d. wavelength