In fig 6, a ray of light in air strikes a glass plate at an angle of incidence 60 degrees, the reflected ray is observed to be perpendicular to the refracted ray, what is the refractive index of the glass
a
1.73
b
1.50
c
0.87
d
0.57
Explanation
Correct Option
a
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olyezema
4 years ago
refractive index= angle of incidence/angle of refraction
angle of refraction=90-60=30
refractive index= sin i/sin r
refractive index= sin 60/sin 30
refractive index=1.732
