Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
59 views
in Physics by (71.8k points)
closed by
Find the focal length of a lens of power `- 2.0 D`. What type of lens is this ?

1 Answer

0 votes
by (72.0k points)
selected by
 
Best answer
Here, focal length `f = ?`, power `P = - 2.0 D`
Clearly, `f = 100/P = 100/(-2.0) = - 50 cm`.
As power of lens is negative, the lens must be concave.

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

...