A) 70 cm
B) 55 cm
C) 40 cm
D) 60 cm
Correct Answer: D
Solution :
Wavelength \[\lambda =\lambda \left( \frac{v+{{v}_{S}}}{v} \right)\] \[\lambda =50\left( \frac{330+\frac{300}{5}}{330} \right)\] \[\lambda =50\left( \frac{330+66}{330} \right)\] \[=50\left( \frac{396}{330} \right)=50\times \frac{6}{5}=60\,cm\]You need to login to perform this action.
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