JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 30 July 2022, Shift 2, Physics Q22

Question 22 of 90 in this shift, Physics question 22 of 30, Section B.

A ring is placed at the bottom of a trough containing four immiscible liquids of refractive indices 1.0, 2.0, 3.0 and 4.0 poured one above the other of heights 10 cm, 20 cm, 30 cm, and 40 cm respectively. The apparent depth at which the ring appears, when seen from outside is _________ cm.

Official answer

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Refraction and Snell's Law
Idea tested: Apparent Depth and Shift

Same idea in other shifts

Asked 4× in all

6 Apr 2024, Shift 2 · Q50In finding out refractive index of glass slab the following observations were made through travelling microscope 50 vernier scale division…HardSingle correct
11 Apr 2023, Shift 2 · Q56As shown in the figure, a plane mirror is fixed at a height of $50\ \mathrm{cm}$ from the bottom of tank containing water…HardNumerical valueHas a figure
12 Apr 2023, Shift 1 · Q46An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is 12 cm. When viewed from the opposite…MediumSingle correct

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.