JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 26 June 2022, Shift 2, Physics Q58

Question 58 of 90 in this shift, Physics question 28 of 30, Section B.

A small bulb is placed at the bottom of a tank containing water to a depth of

\sqrt{7}\ m

. The refractive index of water is

\frac{4}{3}

. The area of the surface of water through which light from the bulb can emerge out is

x\pi\ m^2

. The value of

x

is ________.

Official answer

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Refraction and Snell's Law
Idea tested: Circle of Illuminance (Fish-Eye View)

Same topic in other shifts

All Refraction and Snell's Law questions

8 Apr 2026, Shift 2 · Q42Light ray incident along a vector $\overrightarrow{AO}$ $\left(\overrightarrow{AO} = 2\hat{i} - 3\hat{j}\right)$ emerges out along vector…MediumDiagram basedHas a figure
3 Apr 2025, Shift 2 · Q42A monochromatic light of frequency $5 \times 10^{14}$ Hz travelling through air, is incident on a medium of refractive index '2'.…EasySingle correct
4 Apr 2025, Shift 2 · Q47If an optical medium possesses a relative permeability of $\frac{10}{\pi}$ and relative permittivity of $\frac{1}{0.0885}$ , then the…MediumNumerical value
7 Apr 2025, Shift 1 · Q50A container contains a liquid with refractive index of 1.2 up to a height of 60 cm and another liquid having refractive index 1.6 is added…MediumNumerical value
7 Apr 2025, Shift 2 · Q41Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Refractive…EasyAssertion–reason
7 Apr 2025, Shift 2 · Q42A transparent block A having refractive index $\mu=1.25$ is surrounded by another medium of refractive index $\mu=1.0$ as shown in figure.…MediumSingle correctHas a figure

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.