A) 75.45 cm
B) 90.50 cm
C) 105.25 cm
D) 99.40 cm
Correct Answer: D
Solution :
From the formula of refraction at the spherical surface, \[\frac{{{n}_{2}}}{v}-\frac{{{n}_{1}}}{u}=\frac{{{n}_{2}}-{{n}_{1}}}{R}\] \[\frac{1.67}{v}=\frac{0.67}{25}-\frac{1}{95}\] \[=0.0268-0.0105\] \[\frac{1.67}{v}=0.0163\] \[v=\frac{1.67}{0.0163}=102.45\approx 99.4\]
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