Monochromatic light passes through two parallel slits in a secreen and falls on a place of film. The patteren produced is an example of:
Correct answer: C. Interference and diffraction
- A. Refraction and diffraction
- B. Interference and reflection
- C. Interference and diffraction
- D. Diffraction and polarization
Explanation
When monochromatic light passing through two parallel slit and falls on a screen, the pattern produced is due to interference and diffraction.
This question appeared on the ETEA MDCAT 2014 paper, which you can sit online with every answer explained.
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About Superposition and Interference
Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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