A convex lens has a focal length of 20 c...

A convex lens has a focal length of 20 cm. Where should an object be placed in front of this convex lens so as to obtain an image which is real, inverted and same size as the object? Draw the ray diagram to show the formation of image in this case.

A

30 cm

B

20 cm

C

40 cm

D

10 cm

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The correct Answer is:

C

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