NEET Physics Lens Power MCQ Question
A convex lens has power P. It is cut into two halves along its principal axis. Further one piece (out of the two halves) is cut into two halves perpendicular to the principal axis (as shown in figure). Choose the incorrect option for the reported pieces.
Power of L₁ = P/2
Power of L₂ = P/2
Power of L₃ = P/2
Power of L₁ = P
Correct Answer
Detailed Explanation
When a lens is cut along the principal axis, the power of each half remains the same. Cutting perpendicular reduces the power by half. Thus, L₁ retains full power, making option D incorrect.
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