Q 12-09-177JEE MainJEE Main 2020 (5 Sep, Shift 2)Easy
A prism of angle $A = 1^\circ$ has $\mu = 1.5$. A good estimate for the minimum angle of deviation (in degrees) is close to $\dfrac{N}{10}$. The value of $N$ is ______.
Numerical value type. Enter your answer.
Answer: 5
For a thin prism the deviation is $\delta = (\mu - 1)A = 0.5\times1^\circ = 0.5^\circ = \dfrac{5}{10}$ degree.
So $N = 5$.
Solution by Sreeraj P, M.Sc Physics