A) the pattern vanishes and the width is zero
B) \[y/3\]
C) \[3y\]
D) none of these
Correct Answer: B
Solution :
In simple slit diffraction experiment, width of central maxima \[y=\frac{2\lambda D}{d}\] \[\therefore \] \[\frac{{{y}_{1}}}{{{y}_{2}}}=\frac{{{\lambda }_{1}}}{{{\lambda }_{2}}}\times \frac{{{d}_{2}}}{{{d}_{1}}}\] \[=\frac{400}{600}\times \frac{d/2}{d}\] \[=\frac{1}{3}\] \[{{y}_{2}}=3y\]You need to login to perform this action.
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