Figure shows an object 'o' placed in front of a biconvex lens (mu=3/2) behind which there is water (mu=4/3) and a plane mirror at a distanc eoff 20m. A point object 'O' is placed at a distance of 45cm from the lens as shown in the figure. The position of the image of the object coincides with the object itself, then radius of curvature of the lens is

Figure shows an object 'o' placed in front of a biconvex lens (mu=3/2)

1.	Figure shows an object 'o' placed in front of a biconvex lens (mu=3/2) behind which there is water (mu=4/3) and a plane mirror at a distanc eoff 20m. A point object 'O' is placed at a distance of 45cm from the lens as shown in the figure. The position of the image of the object coincides with the object itself, then radius of curvature of the lens is
Answer» 20cm 45cm 60cm 30cm Solution :`3/(2V_(1))=1/(6R)to(2)` from (1) and (2) `R=30cm`

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