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
1.1k views
in Physics by (37.5k points)
closed by

A convex lens produces an image of an object on a screen with a magnification of 1/2 . When the lens is moved 30 cm away from the away from the object, the magnification of the image is 2 . The Focal length of the lens is 

(1) 20 cm 

(2) 25 cm 

(3) 30 cm 

(4) 35 cm

1 Answer

+1 vote
by (39.7k points)
selected by
 
Best answer

Correct Option is (1) 20 cm

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

...