eboneecook8704
09.03.2021 •
Physics
a ray of light goes from medium 1 to medium 2. The angle made by the light ray with the normal at the point of incidence in medium 2 is greater than the angle made by it in medium 1. On the basis of the information given, which of the two media has a higher optical density and why?
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Ответ:
W
g
=mgs (1)
Change in velocity of coconut is,
E=
2
1
m(u−v)
2
=−
2
1
m(v)
2
(2)
Now, total work done on coconut is equal to change in kinetic energy hence,
W
a
+W
g
=
2
1
mv
2
where, W
a
is work done by air resistance.
Using (1) and (2), we get
W
a