JEE Main 2022 · PhysicsMultiple choiceDiagram basedEasyApplication

JEE Main 28 July 2022, Shift 1, Physics Q45

Question 45 of 90 in this shift, Physics question 15 of 30, Section A.

As shown in the figure, after passing through the medium 1. The speed of light

v_2

in medium 2 will be : (Given

c=3\times10^8\ \mathrm{ms^{-1}}

)

The figure, in words

Light travels with speed c in air, then through Medium 1 (mu_r = 1, epsilon_r = 4) with speed v1, then Medium 2 (mu_r = 1, epsilon_r = 9) with speed v2.

(1) $1.0\times10^8\ \mathrm{ms^{-1}}$ Official answer
(2) $0.5\times10^8\ \mathrm{ms^{-1}}$
(3) $1.5\times10^8\ \mathrm{ms^{-1}}$
(4) $3.0\times10^8\ \mathrm{ms^{-1}}$

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter: Electromagnetic Waves
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy