A) 1/4 sec
B) 1/2 sec
C) 1 sec
D) 2 sec
Correct Answer: A
Solution :
The time interval between successive maximum intensities will be \[\frac{1}{{{n}_{1}}\tilde{\ }{{n}_{2}}}=\frac{1}{454-450}=\frac{1}{4}\sec .\]
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