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Rays of light are falling on a convex le...

Rays of light are falling on a convex lens of focal length `40 cm`. As shown in Fig. Determine the position of the image.
.

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The correct Answer is:
`8 cm`
`f = + 40 cm, u = + 10 cm, v = ?`
`(1)/(v) = (1)/(f) + (1)/(u) = (1)/(40) + (1)/(10) = (5)/(40) = (1)/(8)`
`v = 8 cm`
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