A) 2l
B) \[\frac{2\lambda }{3}\]
C) \[\frac{\lambda }{3}\]
D) l
Correct Answer: A
Solution :
According to given condition \[(\mu -1)t=n\lambda \]for minimum t, n =1 So, \[(\mu -1){{t}_{\min }}=\lambda \] \[{{t}_{\min }}=\frac{\lambda }{\mu -1}=\frac{\lambda }{1.5-1}=2\lambda \]
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