Light of wavelength `lamda` is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear wi

Question

Light of wavelength `lamda` is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear wi

Light of wavelength `lamda` is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear width of the principal maximum is equal to the width of the slit if D equals
A. `(d^(2))/(2lambda)`
B. `(d)/(lambda)`
C. `(2lambda^(2))/(d)`
D. `(2lambda)/(d)`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
The linear width of central principal maximum `=(2lambdaD)/(d)`
If it is equal to width of slit (d), then `(2lambdaD)/(d)=d rArr D=(d^(2))/(2lambda)`

4 views Answered 2023-02-05 15:29