MHT CET · Physics · Ray Optics
A ray of light is incident at an angle ' \(\mathrm{i}\) ' on one face of prism of small angle 'A' and emerges normally from the other surface. ' \(\mu\) ' is the refractive index of the material of the prism. The angle of incidence is
- A \(A \mu\)
- B \(\frac{A}{2 \mu}\)
- C \(\frac{A \mu}{2}\)
- D \(\mu\)
Answer & Solution
Correct Answer
(A) \(A \mu\)
Step-by-step Solution
Detailed explanation
For small angled prism \(\delta_{m}=(\mu-1) A\)
Again \(\quad i+e=A+\delta_{m}=\mu A-A\)
Here \(\quad e=0 \quad \therefore i=A+\delta_{m}=A+\mu A-A=\mu A\)
Again \(\quad i+e=A+\delta_{m}=\mu A-A\)
Here \(\quad e=0 \quad \therefore i=A+\delta_{m}=A+\mu A-A=\mu A\)
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