under what condition the angle of refraction will be equal to angle of incidence.
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According to snell's law
Product of refractive index of medium and angle made with normal to surface of that medium is constant
So if angle of incident is i and angle of refraction is r and Ray coming from medium of refractive index n1 and goes to medium of refractive index n2 then
According to snell's law
n1sini = n2sinr
If n1 is equal to n2 then,
Sini = sinr
Hence i = r
So if n1 =n2 then angle of incident is equal to angle of refraction
Product of refractive index of medium and angle made with normal to surface of that medium is constant
So if angle of incident is i and angle of refraction is r and Ray coming from medium of refractive index n1 and goes to medium of refractive index n2 then
According to snell's law
n1sini = n2sinr
If n1 is equal to n2 then,
Sini = sinr
Hence i = r
So if n1 =n2 then angle of incident is equal to angle of refraction
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