JEE Main 2014PhysicsRay OpticsHardMCQ

JEE Main 2014 — Ray Optics Question with Solution

JEE Main 2014 (19 Apr Online)

Question

A ray of light is incident from a denser to a rarer medium. The critical angle for total internal reflection is θiC and Brewster's angle of incidence is θiB, such that sinθiCsinθiB=η=1.28. The relative refractive index of the two media is

Choose an option

Show full solutionCorrect option: D
Correct answer
D0.8

Step-by-step explanation

μ1: refractive index of rarer medium

μ2: retractive index of denser medium

sinθC=μ1μ2

tanθB=μ1μ2

sin θ C =tan θ B

sin θ C sin θ B = tan θ B sin θ B = 1 cos θ B =1.28

tan θ B = μ 1 μ 2 = 1− ( 1 1.28 ) 2 ( 1 1.28 )

=0.8

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Ray Optics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2014, covering the Ray Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.