Ray Optics

JEE Main level, single correct, medium

112 of 295

Question 112 of 295

To determine refractive index of glass slab using a travelling microscope, minimum number of readings required are :

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Answer: (C) Three

Reading one ⇒\Rightarrow without slab

Reading two ⇒\Rightarrow with slab

Reading three ⇒\Rightarrow with Lycopodium powder

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JEE Main 2025 Apr 2 Shift 1 question paper

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