CUET · PHYSICS · PYQ PAPER 2025
A symmetrical double convex lens is cut into two equal parts by a plane containing the principal axis. The power of the divided lens is :
- A Half of the original lens
- B equal to that of the original lens
- C double of the original lens
- D four times of the original lens
Answer & Solution
Correct Answer
(B) equal to that of the original lens
Step-by-step Solution
Detailed explanation
The power of a lens depends on its focal length \(f\), which is determined by the radii of curvature of its surfaces and the refractive index of the material. Cutting a lens into two equal parts along its principal axis reduces its effective aperture but does not change the…
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