Law of refraction
i) The incident ray, refracted ray and the pt of incident all lie in the same plane.
(Explain graphically)
ii) ratio of Sine<i to the Sine<r is equal to the constant 'n' i.e., refractive index.
(explain abt this constant, why it has been introduced)
why "Sine" is used here, why not "cosine" or "tangent"
i) The incident ray, refracted ray and the pt of incident all lie in the same plane.
(Explain graphically)
ii) ratio of Sine<i to the Sine<r is equal to the constant 'n' i.e., refractive index.
(explain abt this constant, why it has been introduced)
why "Sine" is used here, why not "cosine" or "tangent"