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an object is placed at a distance of 1.5m from a screen and a convex lens is interposed between them and magnification produced in 4.what is the focal length?

ashwen venkatesh , 10 Years ago
Grade 12
anser 1 Answers
Arun Kumar

Last Activity: 10 Years ago

Hello Student,
1/f=1/v-1/u
|v|/|u|=4
|v|+|u|=1.5
|v|=4(1.5-|v|)
you can |v| from here
Now
v will be -|v|
and u=|u|
Now just replace the value to find the numerical value from the formulae.
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
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