YDSE and Wave Phenomena – Rankers Physics

Young's Double Slit Experiment: Practice Problem & Solution

Assertion (A): The fringe pattern in Young's double slit experiment is result of both phenomena of interference and diffraction. Reason (R): Diffraction results from superposition of wavelets of same wavefront.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Young's Double Slit Experiment. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is true. The YDSE pattern is an interference pattern modulated by the diffraction pattern from each individual slit.

Reason (R) is true. Diffraction is explained by Huygens' principle, where secondary wavelets from the same wavefront superpose.
Reason (R) defines diffraction but does not explain why both interference and diffraction contribute to the YDSE pattern, so it's not the correct explanation.

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Similar Practice Questions

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1. Which of the phenomenon is not common to sound and light waves? (1988)
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