MHT CET 2024 Physics question
A ray of light travelling through a rarer medium is incident at very small angle 'i' on a glass slab and after refraction its velocity is reduced by 25%. The angle of deviation is
Answer: (B)
Solution
The ray enters from the rarer medium (air, speed ) into glass where its speed becomes (reduced by 25%). Refractive index of glass . Snell's law for small angles: $ i = μ r ⇒ i
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