A) 55 cm
B) 5.5cm
C) 55m
D) 5.5m
Correct Answer: B
Solution :
Velocity = Frequency x Wavelength In glass, \[5400\times 100=n\times 90\] \[\Rightarrow \] \[n=\frac{5400\times 100}{90}cps\] in air \[\frac{330\times 100}{\lambda }=n=\frac{5400\times 100}{90}\] \[\therefore \] \[\lambda =\frac{330\times 100\times 90}{5400\times 100}=5.5cm\]You need to login to perform this action.
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