JEE Main 2021 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 18 March 2021, Shift 1, Physics Q16

Question 16 of 90 in this shift, Physics question 16 of 30, Section A.

Your friend is having eye sight problem. She is not able to see clearly a distant uniform window mesh and it appears to her as non-uniform and distorted. The doctor diagnosed the problem as :

(1)Myopia and hypermetropia
(2)Presbyopia with Astigmatism
(3)Astigmatism
(4)Myopia with AstigmatismOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Optical Instruments
Idea tested: Astigmatism and Cylindrical Lenses

Same topic in other shifts

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.