KCET · Physics · Ray Optics
The refraction through the prisms are as shown. Pick out the wrong statement from the following. Path of the light ray in
- A a is correct if \(n_{2}>n_{1}\) and \(n_{2}>n_{3}\)
- B \(b\) is correct if \(n_{1}=n_{2}\) and \(n_{2}>n_{3}\)
- C \(c\) is correct if \(n_{2} < n_{1}\) and \(n_{2}=n_{3}\)
- D \(d\) is correct if \(n_{1}>n_{2}\) and \(n_{2} < n_{3}\)
Answer & Solution
Correct Answer
(A) a is correct if \(n_{2}>n_{1}\) and \(n_{2}>n_{3}\)
Step-by-step Solution
Detailed explanation
Since at the second surface light ray grazes along the surface of prism so, \(n_{2}>n_{1}\)
At first surface, light suffers refraction, So, \(\quad n_{2}>n_{3}\)
At first surface, light suffers refraction, So, \(\quad n_{2}>n_{3}\)
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