An electrical spark, such as lightning, generates electromagnetic radiation over a wide range of wavelengths. How much longer will a pulse of radio energy take to travel between two detector stations 100 m apart than will a pulse of ultraviolet radiation from the same spark?
A) The time will be identical because both pulses travel at the speed of light.
B) Just a little longer because the high frequency UV radiation travels faster than the low frequency radio waves.
C) A much shorter time because long wavelength radiation travels faster.
D) A much longer time because radio waves have much longer wavelengths and therefore travel slower.

Question

Quizplus · Accepted Answer

Both radio waves and ultraviolet radiation are forms of electromagnetic radiation, which travel at the speed of light in a vacuum. The speed of light is constant for all types of electromagnetic waves, regardless of their frequency or wavelength.

An Electrical Spark, Such as Lightning, Generates Electromagnetic Radiation Over