a small rod ABC is put in water making an angle 6degree with vertical.if it is viewed paraxially from above ,it will look like bent shaped ABC . the angle of bending (
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given = small rod ABC
angle = 6°
solution=
from the figure we can conclude that ,
α = x / OC and β = x / OC¹
α / β = OC¹ / OC = 1 / μ
β = μα = (4/3) (6⁰)
so,the bending angle = β - α = 2⁰
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