Answer:
According to Corpuscular
theory,whenever light in the form of particlesenters into denser medium from a
rarermedium, a force of attraction comes intoplay on the particles normal to
the surface.
Thus, the component
of velocity normalto the surface of water increases whereas the component of
velocity parallel tosurface does not change. Therefore,
or
But
or
velocity
in water is greater than velocityof light in air. However, in actual case c
>v.
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