A) \[{{n}_{1}}>{{n}_{2}}\]
B) \[{{n}_{2}}>{{n}_{1}}\]
C) \[{{n}_{1}}>{{n}_{2}}\]
D) \[{{n}_{1}}={{n}_{2}}\]
Correct Answer: B
Solution :
Given: Refractive index of the lens \[={{n}_{1}}\] Refractive index of the second medium \[={{n}_{2}}\]Hence, parallel beam of light, after refraction through the lens, diverges only, if the refractive index of the second medium is greater than first medium of the lens. Hence, \[{{n}_{2}}>{{n}_{1}}\]
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