alleryThe value of c derived by Maxwell equals the speed of light obtained from which measurements?
AOperative measurements
BOccasional measurements
COptical measurements
DOptional measurements
Answer & Solution
Correct answer: C. Optical measurements
1. Maxwell computed a wave speed from purely electrical constants.
2. The number that came out was already known from another field.
3. The value of c equals the speed of light obtained from optical measurements.
4. That agreement is what identified light as an electromagnetic wave.
_Source: syllabus Physics Part I, Ch 8 'Electromagnetic Waves'_
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