Question

The table compares the wavelength of some unknown electromagnetic waves.

Comparison of Wavelength
Electromagnetic Wave Wavelength
A 10−4 m
B 10−6 m
C 102 m
D 100 m

Which electromagnetic wave has the lowest frequency?
Wave A
Wave B
Wave C
Wave D

Answer 1

Answer: c

Explanation:

Answer 2

Option C. (102 m)

Electromagnetic Wave having highest wavelength has the lowest frequency.

Step-by-step explanation:

• The relation between wave length and frequency of the electromagnetic wave is inversely proportional if the wave is moving at a fixed speed.
• So, the largest wave length of electromagnetic wave found during the comparison is 102 m so it must have the lowest frequency.

• The mathematical relation is given as : v=fλ; where f stands for frequency, λ for wavelength and v for speed of wave.