A point source of light situated in a homogenous medium gives rise to:
Correct answer: A. A spherical wave front
- A. A spherical wave front
- B. A plane wave front
- C. A cylindrical wave front
- D. An elliptical wave front
Explanation
A point source radiates uniformly in all directions in a homogeneous medium, so at any instant the disturbance occupies a spherical surface - a spherical wavefront centred on the source.
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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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