Finish your homework easily and quickly with Expert Help and FREE NCERT Solutions
Introductory Video
Select Board
Select Class
By clicking on "SIGN UP" you agree to T&C
Existing user? Login here
Purchase mobileappIcon Download our Mobile App
Call Us at 011-40705070  or  
Click to Call
Select your Board & Class
  • Select Board
  • Select Class
To find the focal length of a convex lens in a laboratory, Aman fixed it on a stand and kept it on a mark of 15.3cm on an optical bench.To get a clear image of a distant tree, he adjusted a screen and finally got the clear image when the screen was placed at 32.5cm. Then Focal length of the lens is.........
Asked by Anushka(student) , on 24/3/13

Become Expert
Become a Science expert
Start Now with Video Lessons, Sample Papers, Revision Notes & more for Class-X - CBSE 

focal length = distance b/w the lens and the screen

focal length = 32.5 cm - 15.3 cm

 =  17.2cm

hence the focal length of the lens is 17.2 cm

Posted by Aayushi Pandey(student)on 24/3/13

More Answers

Ask a QuestionHave a doubt? Ask our expert and get quick answers.
Show me more questions