The speed of a light wave c is related to its wavelength λ and its frequency f by c=λf. If the speed of light is 3×108 meters/second and the wavelength of an infrared wave used in a remote control is 7×10−9 meters, then what is its frequency?(1 point)

Question

Responses

2×100 Hz
2 times 10 superscript 0 baseline upper H z
4×1016 Hz
4 times 10 superscript 16 baseline upper H z
2×10−17 Hz
2 times 10 superscript negative 17 baseline upper H z
4×10−2 Hz

Answer 1

To find the frequency, we can rearrange the equation c=λf to solve for f. Then we can substitute the given values:

f = c / λ
f = (3×108 m/s) / (7×10^(-9) m)
f = 4×10^16 Hz

Therefore, the frequency of the infrared wave used in a remote control is 4×10^16 Hz.

Answer: 4×10^16 Hz