Question

A 10 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 30 cm. If the distance of the object from the lens is 20 cm then the image distance and size of the image respectively are *

1 point

(a) -60cm, + 30cm

(b) + 60cm, - 30cm

(c) -30cm, +60cm

(d) +30cm, - 60cm​

Answer 1

A 10 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 30 cm. If the distance of the object from the lens is 20 cm then the image distance and size of the image respectively are *

(a) -60cm, + 30cm

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