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Question
Figure given below shows a beam of light converging at point P. When a convex lens of focal length 16 cm is introduced in the path of the beam at a place O shown by dotted line, the beam converges at a distance x from the lens. The value x will be equal to
Figure given below shows a beam of light converging at point P. When a convex lens of focal length 16 cm is introduced in the path of the beam at a place O shown by dotted line, the beam converges at a distance x from the lens. The value x will be equal to
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Solution
The correct option is D 48 cm
From the figure shown it is clear that
For lens : u = 12 cm and v = x = ?
By using 1f=1v−1u⇒1+16=1x−1+12⇒x=48cm.
From the figure shown it is clear that
For lens : u = 12 cm and v = x = ?
By using 1f=1v−1u⇒1+16=1x−1+12⇒x=48cm.
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