The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by (a) (b) (c) (d)

Answer: (c). δ first decreases with i, becomes minimum at i = e, then increases again. The graph is a smooth U-shaped curve with one minimum, not a straight line or a sharp V. So the answer is (c).

The graph between angle of deviation (δ) and angle of incidence (i)… | JEE Main 2013

Q83JEE Main 2013Easy

Prism, Dispersion & Scattering

The graph between angle of deviation $(\delta)$ and angle of incidence $(i)$ for a triangular prism is represented by

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Answer: (c)

$\delta$ first decreases with $i$ , becomes minimum at $i = e$ , then increases again.
The graph is a smooth U-shaped curve with one minimum, not a straight line or a sharp V.
So the answer is (c).

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