A) the pattern vanishes and the width is zero
B) \[y/3\]
C) \[3y\]
D) \[5y\]
Correct Answer: C
Solution :
\[\sin \theta =\frac{\lambda }{d}\] |
Or \[\theta =\frac{\lambda }{d}\] |
\[\therefore {{\beta }_{1}}=D{{\theta }_{1}}\,=\frac{400}{d}D=y\] |
And \[{{\beta }_{2}}=D{{\theta }_{2}}=\frac{600D}{d/2}=3y\] |
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