A) \[3\times {{10}^{8}}m/s\]
B) \[1.5\times {{10}^{8}}m/s\]
C) \[6\times {{10}^{8}}m/s\]
D) \[\sqrt{3}\times {{10}^{8}}m/s\]
Correct Answer: B
Solution :
Refactive index of medium \[\mu =\frac{1}{\sin C}=\frac{1}{\sin 30}\] \[=\frac{1}{1/2}\] \[\therefore \]Velocity of light in the medium \[\upsilon =\frac{c}{\mu }\] \[=\frac{3\times {{10}^{8}}}{2}=1.5\times {{10}^{8}}m/s\]
You need to login to perform this action.
You will be redirected in
3 sec
