Questions
The idea of secondary wavelets for the propagation of a wave was first given by
a
Newton
b
Huygen
c
Maxwell
d
Fresnel
detailed solution
Correct option is B
The idea of secondary wavelets was first given by HuygenTalk to our academic expert!
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The periodic time of rotation of a certain star is 22 days and its radius is 7108 meters. If the wavelength of light emitted by its surface be 4320 , the Doppler shift will be (1 day = 86400 sec)
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