The idea of secondary wavelets for the. propagation of a wave was first given by
(a) Newton
(b) Huygens
(c) Maxwell
(d) Fresnel
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( b ) HUYGEN
HUYGEN
the idea of secondary wavelet is first given by HUYGEN . Explanation: According to Huygens' principle, every point on a given wavefront can be considered to be a source of secondary wavelets which are spherical spreading out in the forward direction at the same speed of light.
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