A) 1.20
B) 2.40
C) 1.50
D) 1.75
Correct Answer: C
Solution :
Velocity of light, in the medium, \[{{C}_{m}}=v\lambda \] \[=(4\times {{10}^{14}})\times (5\times {{10}^{-7}})\] \[=2\times {{10}^{8}}m/\sec \]. Velocity of light in vacuum,\[{{C}_{v}}=3\times {{10}^{8}}m/\sec \] \[\therefore \] \[\mu =\frac{{{C}_{v}}}{{{C}_{m}}}=\frac{3\times {{10}^{8}}}{2\times {{10}^{8}}}=\mathbf{1}\mathbf{.5}\]
You need to login to perform this action.
You will be redirected in
3 sec
