A) 2.0
B) 2.3
C) 2.5
D) 2.7
Correct Answer: A
Solution :
Let C be the centre and \[{{P}_{1}}\] and \[{{P}_{2}}\] the poles of the sphere. A ray OA parallel to a diameter is first refracted into the glass along AB. For refraction at A from air to glass, we have \[\frac{\mu }{v}-\frac{1}{u}-\frac{\mu -1}{R}\] Here u \[=\infty \] and \[v=2R\] \[\therefore \] \[\frac{\mu }{2R}-\frac{1}{\infty }=\frac{\mu -1}{R}\] \[\frac{\mu }{2R}=\frac{\mu -1}{R}\] \[\mu =2\mu -2\] \[\mu =2\]You need to login to perform this action.
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