A crow is sitting on a branch of a tree. On the ground surface, wheat grains are spread. The crow flies towards the ground, picks up a grain and sits on the front wall. The possible paths are shown in the diagram. Choose the correct path so that path length becomes minimum. Given that BD = DE, ∠AFB =∠ EFC.
Correct answer: C. AFC
- A. ABC
- B. ADC
- C. AFC
- D. AEC
Explanation
Path AFC minimizes path length by utilizing the principles of reflection and refraction effectively, making it the correct choice.
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About Optics
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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