Consider the diffraction pattern for a small pinhole. As the size of the hole is increased (a) the size decreases. (b) the intensity decreases. (c) the size increases. (d) the intensity decreases. [NCERT Exemplar]

Consider the diffraction pattern for a small pinhole. As the size of t

1.	Consider the diffraction pattern for a small pinhole. As the size of the hole is increased (a) the size decreases. (b) the intensity decreases. (c) the size increases. (d) the intensity decreases. [NCERT Exemplar]
Answer» the size decreasesExplanation:As the size of the HOLE is increased, the width of the central MAXIMUM of the DIFFRACTION pattern of hole decreases. Since the same amount of LIGHT is now distributed over a SMALL area, as intensity ∞ 1/area, the area is decreasing so area intensity increases

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Consider the diffraction pattern for a small pinhole. As the size of the hole is increased (a) the size decreases. (b) the intensity decreases. (c) the size increases. (d) the intensity decreases. [NCERT Exemplar]

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