Questions
A candle placed 25 cm from a lens, forms an image on a screen placed 75 cm on the other end of the lens. The focal length and type of the lens should be
detailed solution
Correct option is A
u=−25cm,v=+75cm ⇒1f=1+75−1−25⇒f=+18.75cm. convex lens.Talk to our academic expert!
Similar Questions
Figure given below shows a beam of light converging at point P. When a concave lens of focal length 16 cm is introduced in the path of the beam at a place O shown by dotted line such that OP becomes the axis of the lens, the beam converges at a distance x from the lens. The value x will be equal to
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