In a Newton's ring setup, the MAIN factor responsible for the formation of the rings is
Correct answer: D. Interference of light.
- A. Reflection of light.
- B. Refraction of light.
- C. Diffraction of light.
- D. Interference of light.
Explanation
The correct answer is interference of light. Newton's rings are formed due to the interference of light waves reflected from the top and bottom surfaces of the air film between the lens and the glass plate. When these reflected waves overlap, they interfere constructively or destructively, leading to the appearance of bright and dark rings, respectively.Reflection, refraction, and diffraction are not the primary phenomena responsible for this pattern. Reflection occurs in the setup, but it is the interference of the reflected light waves that leads to the formation of rings. Refraction is not significant here as the primary medium is air, and diffraction does not contribute significantly to the ring pattern in this context.
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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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