Question

James Clerk Maxwell predicted _________.
A. the speed of light
B. that light had a finite speed
C. that light was an electromagnetic wave
D. that light was both a wave and a particle

Answer 1

James Clerk Maxwell predicted that light was an electromagnetic wave. The answer is C. He had developed a theory that explained the relationship between electricity and magnetism and correctly predicted that visible light is caused by electromagnetic waves. (credit: G. J. Stodart)