Consider a Youngâ€™s double slit experiment as shown in figure. What should be the slit separation d in terms of wavelength $\lambda $ such that the first minima occurs directly in front of the slit (S1) ?

Question

Consider a Youngâ€™s double slit experiment as shown in figure. What should be the slit separation d in terms of wavelength $\lambda $ such that the first minima occurs directly in front of the slit (S₁) ?

${\lambda \over {2\left( {5 - \sqrt 2 } \right)}}$

${\lambda \over {2\left( {\sqrt 5 - 2} \right)}}$

${\lambda \over {\left( {5 - \sqrt 2 } \right)}}$

${\lambda \over {\left( {\sqrt 5 - 2} \right)}}$

Solution

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