Jayita Ekka, Content Team
Dear student,
You are asking if the focal length of a lens is 20 cm, what is its power in diopters?
Calculating Lens Power:
Formula:
Given:
Calculation:
Therefore, the power of the lens is +5 diopters
Why is it positive?
convex lens
Additional Notes:
Therefore, if a lens has a focal length of 20 cm, its power is +5 diopters. This means it is a convex lens capable of converging light rays.
Lucknow (Uttar Pradesh)
Greater Noida (Uttar Pradesh)
Feb 18, 2025 | By: Shivani
Feb 18, 2025 | By: Soham Mitra
VCTM Aligarh
Shri Radha Rani Private ITI
Vision Institute of Technology (VIT), Aligarh
Mangalayatan University
Acn College (ACNCEMS), Aligarh
Aligarh Group Of Colleges
Manglayatan University Powered by i Nurture
ZHCET Aligarh
COOCH BEHAR GOVERNMENT ENGINEERING COLLEGE Coochbehar
Rajas Engineering College
SPCE bangalore
IIT Roorkee
SRM University
BITS Pilani
SSLD Aligarh