Q. 23

The near point of

Answer :

According to the question

Object Distance (u) = -25 cm


Image Distance (v) = -50 cm


By Lens Formula





F = 50 cm.


Since focal length is positive hence the lens is convex lens.


Power =


Focal length = 50 cm = 0.5 m


1 m = 100 cm.


Power =


Hence the Power is 2 Dioptre


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses