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NEET 2025
Exam
NEET
Year
2025
Subject
Physics
Chapter
Ray Optics

NEET 2025 · Physics · Ray Optics

In a certain camera, a combination of four similar thin convex...

In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p)(p) and magnification (m)(m) for each lens will be, respectively

Options

  1. A4p and 4m4 p \text{ and } 4 m
  2. Bp4 and 4mp^4 \text{ and } 4 m
  3. C4p and m44 p \text{ and } m^4
  4. Dp4 and m4p^4 \text{ and } m^4

Correct answer

C. 4p and m44 p \text{ and } m^4

Step-by-step solution

When a combination of lens is used then total power Pnet =P+P+P+P=4P\begin{aligned} P_{\text{net }} & =P+P+P+P \\ & =4 \mathrm{P} \end{aligned} Total magnification mnet =m×m×m×\mathrm{m}_{\text{net }}=\mathrm{m} \times \mathrm{m} \times \mathrm{m} \times\mathrm{m}=\mathrm{m}4^4
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