The angle of minimum deviation for an equilateral glass prism is . The refractive index of the prism is
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4
Official Solution
Correct Option:
(2)
Step 1: Formula
Refractive index . Step 2: Values
Equilateral prism means and . Step 3: Calculation
$ $ Final Answer: (B)
02
PYQ 2010
medium
physicsID: met-2010
A beam of light is incident at to a plane surface. The reflected and refracted rays are perpendicular to each other then refractive index of the surface is
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None of these
Official Solution
Correct Option:
(1)
Step 1: Concept
When reflected and refracted rays are perpendicular, the angle of incidence is the Brewster's angle ( ). Step 2: Formula
According to Brewster's Law, . Step 3: Calculation
. Final Answer: (A)
03
PYQ 2015
medium
physicsID: met-2015
A rectangular glass slab ABCD of refractive index is immersed in water of refractive index . A ray of light is incident at the surface AB of the slab as shown. The maximum value of the angle of incidence such that the ray comes out only from the another surface CD is given by
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Official Solution
Correct Option:
(1)
Step 1: Understanding the Concept:
For the ray to exit only from CD, it must undergo total internal reflection at the AD face. The critical angle at the AD face satisfies . Step 2: Detailed Explanation:
From geometry, , so . Applying Snell's law at face AB:
Step 3: Final Answer:
About Refraction Of Light - MET
Refraction Of Light is a vital chapter for MET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Refraction Of Light PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Refraction Of Light carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
