Learn

Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 10 April 2023, Shift 1, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

An object is placed at a distance of 12 cm in front of a plane mirror. The virtual and erect image is formed by the mirror. Now the mirror is moved by 4 cm towards the stationary object. The distance by which the position of image would be shifted, will be
  1. (1)2 cm towards mirror
  2. (2)4 cm towards mirror
  3. (3)8 cm towards mirrorOfficial answer
  4. (4)8 cm away from mirror

Official answer

Option 3

NTA final key.

Chapter
Ray Optics and Optical Instruments
Topic
Spherical Mirrors
Idea tested
Image Velocity (Axial Motion)

Same idea in other shifts

Asked 3× in all
  1. 26 Aug 2021, Shift 1 · Q8Car B overtakes another car A at a relative speed of 40 ms−140\ \mathrm{ms^{-1}}. How fast will the image of car B appear to move in the mirror…MediumSingle correct
  2. 3 Sep 2020, Shift 2 · Q25When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm from the mirror. If the…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.