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CBSE Class 10 Answered

the focal length of convex lens and mirror is taken as +ve whereas for conacave mirror and lens it is taken -ve. is it true?
Asked by Rohith Kumar | 04 Mar, 2015, 02:54: PM
answered-by-expert Expert Answer
No it is not true.
The focal length of convex lens and concave mirror is positive.
The focal length of concave lens and convex mirror is negative.
Answered by Romal Bhansali | 04 Mar, 2015, 07:27: PM

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