The condition for constructive interference of two coherent beams is that the path difference should be
Correct answer: B. integral multiple of λ
- A. integral multiple of λ/2
- B. integral multiple of λ
- C. odd integral multiple of λ/2
- D. even integral multiple of λ
Explanation
Explanation: The condition for constructive interference is that the path difference between two coherent waves should be an integral multiple of the wavelength (λ). Mathematically, this is expressed as mλ, where m is an integer.
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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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