0 votes
21 views
in Physics by (71.7k points)
closed by
How are power and focal length of a lens related ? You are provided with two lenses of focal length `20 cm` and `40 cm` respectively. Which lens will you use to obtain more convergent light ?

1 Answer

0 votes
by (71.8k points)
selected by
 
Best answer
`P = (1)/(f)`.
For obtaining more convergent light, power of lens must be larger. Therefore, its focal length must be smaller, Therefore, the lens of `f = 20 cm` will provide more convergent light.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...