Arre, i + e = A + δ, deviation ka formula hai na! Graph banana? Plot incidence angle 'i' on x-axis, deviation 'δ' on y-axis — it makes that lovely U-shaped curve, minimum deviation pe symmetry milti hai. I miss those neat physics practicals, yaar; my whole JEE prep was built on such clean graphs, unlike my messy engineering projects now.
#education#class
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