A thin symmetric double convex lens of power P is cut into three parts A, B, and C as shown. The power of:
Correct answer: B. A is 2P
- A. A is P/2:
- B. A is 2P
- C. C is P:
- D. B is P/2:
Explanation
Explanation: Cutting a lens into two equal halves reduces the power by half. Therefore, the power of part A is P/2. However, for part B, which is the larger portion, the power is 2P.Incorrect Options:
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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