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Saturday, 31 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 9× 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. 6 Apr 2024, Shift 1 · Q51The refractive index of prism is μ=3\mu = \sqrt{3} and the ratio of the angle of minimum deviation to the angle of prism is one. The value…MediumNumerical value
  4. 27 Jan 2024, Shift 1 · Q45If the refractive index of the material of a prism is cot⁡(A2)\cot\left(\frac{A}{2}\right), where A is the angle of prism then the angle of…MediumSingle correct
  5. 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
  6. 30 Jun 2022, Shift 1 · Q58The refractive index of an equilateral prism is 2\sqrt{2} . The angle of emergence under minimum deviation position of prism, in degree,…EasyNumerical value
  7. 22 Jul 2021, Shift 2 · Q24A ray of light passing through a prism (μ=3\mu = \sqrt{3}) suffers minimum deviation. It is found that the angle of incidence is double the…EasyNumerical value
  8. 25 Jul 2021, Shift 2 · Q17A prism of refractive index μ\mu and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of…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 108 of the 174 JEE Main shifts held from 2017 to 2026.