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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 increases.

 Consider the diffraction pattern for a small pinhole. As the size of the hole is increased
A. the size decreases.
B. the intensity increases.
C. the size increases.
D. the intensity decreases.

Answers (1)

The correct answers are the options (a, b)

Key concept: The 'shadow' of the hole of dimeter d is spread out over an angle

\Delta \theta =1.22\frac{\lambda}{D}\Rightarrow \Delta \theta\propto \frac{1}{D}

 

 

Posted by

Gurleen Kaur

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