NCERT Solution for Class 10 Science Chapter 10
Light – Reflection and Refraction
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-184
Questions No-3
Find the power of a concave lens of focal length 2 m.
Share
Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
Please follow the link to visit website for first and second term exams solutions.
https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-10/
The power (P) of a lens is given by the reciprocal of its focal length (f) in meters. The formula for calculating the power of a lens is:
P = f/1
Given that the focal length (f) of the concave lens is 2 meters, you can substitute this value into the formula to find the power:
P = 1/2
So, the power (P) of the concave lens is 0.5 Dioptres. The positive sign indicates that it is a diverging lens (concave lens).