NEET UG · Physics · Ray Optics and Optical Instruments
Critical Angle and TIR
NEET asked Critical Angle and TIR 3 times, in 2019, 2022 and 2023: 3 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Snell's Law, in Ray Optics and Optical Instruments (Physics). The longest wait between two papers asking it was 3 years.
Updated 2026-10-08
- Times asked
- 3
- in 2017–2026
- Papers
- 3
- of 10
- First asked
- 2019
- last in 2023
- Chance next paper
- 6%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2019, 2022 and 2023.
How NEET framed it
Numerical is the usual form. Skill tested: calculation.
- Numerical
- Angle of refraction at critical angle
Chance asked next paper 6%
Every question
All 3 questions
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2023 Q8Light travels a distance in time in air and in time in another denser medium. What is the critical angle for this…Numerical · Medium
- 2022 Q47Two transparent media A and B are separated by a plane boundary. The speed of light in those media are m/s and…Numerical · Medium
- 2019 Q28In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be…One-line MCQ · Easy
Same topic
Other ideas in Snell's Law
Snell's Law has 5 ideas NEET has asked; 2 of them came up in more than one question.
- Snell's Law Calculation2× · 2021
- Apparent Depth for Non-Air Observeronce · 2026
- Grazing Emergence Conditiononce · 2024
- Brewster's Angle and Snell's Lawonce · 2022