A light ray emanating from under water (index 1.333) makes an angle of 37.5° with the normal to the surface. What is the angle that the refracted ray makes with the normal as it emerges into air index (1.0003)?
here,
the refractive index of water , nw = 1.333
the refractive index of air , na = 1.0003
the angle of incidence , i = 37.5 degree
let the angle of refraction be r
using snell's law
sin(r)/sin(i) = nw/na
sin(r)/sin(37.5) = 1.33
solving for r
r = 54.06 degree
the angle of refraction is 54.06 degree
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A plate of glass with parallel faces having a refractive index
of 1.46 is resting on the surface of water in a tank. A ray of
light coming from above in air makes an angle of incidence 37.5 ?
with the normal to the top surface of the glass. (Figure 1)
What angle ?3 does the ray refracted into the water
make with the normal to the surface? Use 1.33 for the index of
refraction of water.
?3= ???
Figure...
Problem
2: A ray of light is incident on an air/water
interface. The ray makes an angle of θ1 = 44
degrees with respect to the normal of the surface. The index of the
air is n1 = 1 while water is
n2 = 1.33.
Part (a) Choose an expression for
the angle (relative to the normal to the surface) for the ray in
the water, θ2.
SchematicChoice :
Part (b) Numerically, what is the angle in
degrees?
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