1.

A convex lens forms an erect and two times magnified image of an object placed at a distance 10cm in front of it.Find the position of the image.please ans fast !!!!​

Answer»

Answer:

Answer:

A) the object is placed between F1AND OPTIC center

. b) the focal LENGTH could be found through lens formulae as magnification is +3.

+3u=v

1/f=1/v-1/u

=1/3u-1/u

=(1-3)/3u

=-2/3*-20(u =-20)

=f=15cm



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