1.

(i) A concave mirror produces three times enlarged image of an object placed at 10 cm in front iof it. Calculate the focal length of the mirror. (ii) Show the formation of the image with the help of a ray diagram when object is placed 6 cm away from a pole of a convex mirror.

Answer»

SOLUTION :(i) `m=-V/u,u=-10cm`
`-3=(-v)/(-10)`
`v=+30`
`=+3xx-10=-30cm`
`-1/30-1/10=1/f`
`f=-7.5cm`


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