physics
posted by geet .
to find angle of deviation with angle of incidence through a hollow prism with different transparent fluids(i.e ., water,kerosene,sprit,turpentine oil) with angle of incidenceof30,35,40,45,50,55,60 degree.

Angles of incidence and refraction are angles measured from the normal.
If n represents the refractive index between air and the medium, the equation that governs the relationship between them is
n=sin(θi)/sin(θr)
which gives the value of θr as
θr=sin^{1}(sin(θi)/n)
Since n>1 for the media named in the question, the refracted ray would bend towards normal.
Example calculation:
Take n=1.33 for water.
Angle of incidence, θi=30°
Angle of refraction
θr=sin^{1}(sin(θi)/n)
=sin^{1}(sin(30)/1.33)
=sin^{1}(.3836)
=22.56°
Deviation
= 3022.56°
=7.44°
Review your class notes and/or textbook if it is still not clear.
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