Electromagnetic radiation can be specified by its wavelength (λ), its frequency (υ) or its period (τ). The period τ is the time it takes one complete wavelength to pass a point in space. Based on this information, what is the mathematical relationship between υ and τ?
A)υ = 1/τ
B)υ= τ
C)τ = υ/ с
D)с = τ × υ
E)τ = с/υ

Question

Quizplus · Accepted Answer

Frequency (υ) is defined as the number of cycles (or wavelengths) that pass a point in one second. It is measured in Hertz (Hz). 
Period (τ) is defined as the time it takes for one cycle (or wavelength) to pass a point in space. It is measured in seconds (s). 
Mathematically, the relationship between frequency and period is:
υ = 1/τ 
Therefore, the correct choice is A.

Electromagnetic Radiation Can Be Specified by Its Wavelength (λ), Its