The graph between the angle of deviation (del | vedclass

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(C) For a triangular prism,the relationship between the angle of deviation $(\delta)$ and the angle of incidence $(i)$ is non-linear.As the angle of i

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(C) For a triangular prism,the relationship between the angle of deviation $(\delta)$ and the angle of incidence $(i)$ is non-linear.As the angle of incidence $(i)$ increases from a small value,the angle of deviation $(\delta)$ initially decreases.It reaches a minimum value,known as the angle of minimum deviation $(\delta_{m})$,at a specific angle of incidence.As the angle of incidence $(i)$ increases further beyond this point,the angle of deviation $(\delta)$ starts to increase again.This characteristic $U$-shaped curve is represented by graph $C$.

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

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