Huygen's conception of secondary waves
Allow us to find the focal length of a thick lens
Is a geometrical method to find a wavefront
Is used to determine the velocity of light
Is used to explain polarisation
(b)
Figure, shows wave fronts in still water moving in the direction of the arrow towards the interface $PQ$ between a shallow region and a deep(denser) region. Which of the lines shown may represent one of the wave fronts in the deep region?
Explain plane wave refraction from denser to rarer medium using Huygen's principle.
Write the limitation of Huygen's principle.
Is Huygen's principle valid for longitudunal sound waves ?
By Huygen's wave theory of light, we cannot explain the phenomenon of
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