A) \[\frac{{{e}^{1/2}}}{{{e}^{1/2}}-1}\]
B) \[\frac{{{e}^{2}}}{{{e}^{2}}-1}\]
C) \[1-{{e}^{-1}}\]
D) \[{{e}^{-1}}\]
Correct Answer: C
Solution :
Refractive index \[{{r}^{7/2}}\] But \[{{r}^{5/2}}\] or \[{{r}^{3/2}}\] \[l\] \[\frac{l}{L-l}\] \[\frac{L}{l}\] or \[\frac{l}{L}\] or \[\frac{lL}{L+l}\]You need to login to perform this action.
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