Answer:-The focal length f=R/2 is valid for both cancave and convex mirror,
Note-sign-convention is always apply you using this formula.
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Q. To get an image larger than the object, One can use
Answer:-Concave Mirror
Q. What is the focal length of a convex mirror?
Answer:-The focal length of concave mirror positive.
Q.How finding the focal length of convex mirror ?
Answer:- focal length of convex find by two Method-
first Method- f=R/2
second Method-
(1/f)=(1/u)+(1/v)
