Questions
The magnification of an object placed it front of a convex lens of focal length 20 cm is + 2. To obtain a magnification of -2, the object will has to be moved a distance equal to
detailed solution
Correct option is B
When magnification is + 2.u = -x ; v = -2x ;f = +20Using 1−2x+1x=120or x=10 cmTo have a magnification of −2u=−yv=+2yand f=+20∴12y+1y=120or y=30 cm ∴y−x=20 cmTalk to our academic expert!
Similar Questions
Image of the sun is formed by a binconvex lens of focal length f. The image is a circular patch of radius r and is formed on the focal plane of the lens. Choose the correct statement from the following
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
