JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 12 April 2023, Shift 1, Physics Q46

Question 46 of 90 in this shift, Physics question 16 of 30, Section A.

An 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 side, the apparent distance of the bubble is observed as 4 cm. If the side of the ice cube is 24 cm, the refractive index of the ice cube is

(1) $\frac{6}{5}$
(2) $\frac{2}{3}$
(3) $\frac{4}{3}$
(4) $\frac{3}{2}$ Official answer

Official answer

Option 4

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
30 Jul 2022, Shift 2 · Q22A 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…MediumNumerical value

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.