Verified Solution • 2025–26 Session moderate

QJEEM23Phed34: JEE Main 2023 Physics - Class 12 JEEM23Phed34 Solution: A person has been using spectacles of power dioptre for distant …

A person has been using spectacles of power −1.0-1.0 dioptre for distant vision and a separate reading glass of power 2.02.0 dioptres. What is the least distance of distinct vision for this person :

Multiple Choice Options

  • A 50 cm
  • B 40 cm
  • C 30 cm
  • D 10 cm

Step-by-Step Verified Solution

u = 25 cm

f=12f=\frac{1}{2} m = 50 cm

1v−1u=1f{1 \over v} - {1 \over u} = {1 \over f}

⇒1v+125=−150\Rightarrow {1 \over v} + {1 \over {25}} = - {1 \over {50}}

1v=−150{1 \over v} = - {1 \over {50}}

⇒u=−50\Rightarrow u = - 50 cm

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring