We know, siniC=μ1 Also μ∝λ1 Thus sinic∝λ 
Therefore, for higher value of λ critical angle will be more Hence Yellow, Orange and Red will come out to air.
NEET UG 2023 — Physics Optics
2023mcqeasy
Which set of colours will come out in air for a situation shown in figure?
Official previous-year question
Held on 30 Apr 2023 · Verified 9 Jul 2026.
Options
- A
Orange, Red and Violet
- B
Blue, Green and Yellow
- C
Yellow, Orange and Red
- D
All
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Optics in other years
More NEET UG Optics questions
The refractive index of glass is 1.5. The speed of light in glass is:
2026easy
Two thin lenses of focal lengths f₁ = +20 cm and f₂ = -10 cm are in contact. The power of the combination is:
2026easy
An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then -
2025easy
A microscope has an objective of focal length 2 cm , eyepiece of focal length 4 cm and the tube length of 40 cm . If the distance of distinct vision of eye is 25 cm , the magnification in the microscope is :
2025medium
The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at $22.5^{\circ}$ from the polarization axis of one of the polaroid, is ( $\mathrm{I}_0$ is the intensity of polarised light after passing through the first polaroid):
2025medium
Other Physics topics for NEET UG
Keep practicing Optics
Work through every NEET UG Optics PYQ, year by year.