Light from the Sun reaches the Earth in the form of:
Correct answer: B. Plane wave front
- A. Circular wave front
- B. Plane wave front
- C. Cylindrical wave front
- D. All of these
Explanation
The correct option is B because Light from the Sun reaches the Earth in the form of a plane wave front. While the Sun emits light in all directions, the vast distance between the Sun and the Earth means that the light rays that reach the Earth are effectively parallel, resulting in a nearly flat or plane wave front.
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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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