Light of wavelength `lamda` is incident on a slit width d. The resulting diffraction pattern is observed on a screen at a distance D. The linear width of the principal maximum is then equal to the width of the slit if D equals

Options

A. `(d^(2))/(2lambda)`
B. `(2d^(2))/(2lambda)`
C. `(d)/(lambda)`
D. `(2lambda)/(d)`

Answer

A

Explanation

`(d^(2))/(2lambda)`