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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceOtherMediumConceptual

JEE Main 3 April 2025, Shift 1, Physics Q41

Question 41 of 75 in this shift, Physics question 16 of 25, Section A.

Consider following statements for refraction of light through prism, when angle of deviation is minimum. A. The refracted ray inside prism becomes parallel to the base. B. Larger angle prisms provide smaller angle of minimum deviation. C. Angle of incidence and angle of emergence becomes equal. D. There are always two sets of angle of incidence for which deviation will be same except at minimum deviation setting. E. Angle of refraction becomes double of prism angle. Choose the correct answer from the options given below:
  1. (1)A, C and D OnlyOfficial answer
  2. (2)A, B and E Only
  3. (3)B, C and D Only
  4. (4)B, D and E Only

Official answer

Option 1

NTA final key.

Chapter
Ray Optics and Optical Instruments
Topic
Prism Deviation
Idea tested
Minimum Deviation Condition

Same idea in other shifts

Asked 4× in all
  1. 2 Apr 2026, Shift 1 · Q40For a thin symmetric prism made of glass (refractive index 1.51.5), the ratio of incident angle and minimum deviation will be _________.MediumSingle correct
  2. 5 Apr 2026, Shift 1 · Q40A ray of light passing through an equilateral prism is having velocity 2.12×1082.12 \times 10^8 m/s in the prism material, then the minimum…MediumSingle correct
  3. 31 Jan 2024, Shift 1 · Q45The refractive index of a prism with apex angle AA is cot⁡A/2\cot A/2. The angle of minimum deviation is :MediumSingle correct

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.