KCET · Physics · Ray Optics
A convex lens has power \(P\). It is cut into two halves along its principal axis. Further one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in figure. Choose the incorrect option for the reported lens pieces
- A Power of \(L_2\) is \(\frac{P}{2}\)
- B Power of \(L_3\) is \(\frac{P}{2}\)
- C Power of \(L_1\) is \(P\)
- D Power of \(L_1\) is \(\frac{P}{2}\)
Answer & Solution
Correct Answer
(D) Power of \(L_1\) is \(\frac{P}{2}\)
Step-by-step Solution
Detailed explanation
\(P_2 \frac{1}{\mathrm{~F}}=(\mu-1) \frac{2}{\mathrm{R}}\)
Power of L1 \(\nabla \rightarrow \mathrm{P}_{\mathrm{L}_1}=(\mu-1) \frac{2}{\mathrm{R}}=\mathrm{P}\)
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