In 1678 a Dutch physicist proposed that light travels as a wave. He was:
AHuygens
BNewton
CDescartes
DFoucault
Answer & Solution
Correct answer: A. Huygens
1. Descartes and Newton backed particles of light.
2. The Dutch physicist of 1678 backed waves.
3. He was Christiaan Huygens.
_Source: NCERT Class 12 Physics Part II, Chapter 10, Wave Optics._
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