A) \[f\,+\,x)\,/\,f\]
B) \[f\,/\,x\]
C) \[x\,/\,f\]
D) \[f\,/\,(f\,+\,x)\]
Correct Answer: B
Solution :
Option [b] is correct. |
Explanation: \[u=f+x\] |
Using mirror formula, |
\[1\,/\,v\,\,+\,\,1\,/\,u\,\,=\,\,1\,/\,f\] |
\[\therefore \,\,v=-f(f\,+\,x)\,/\,x\] |
So, the magnification \[=\,\,\,|m|\,\,=\,\,\,v\,/\,u\,\,\,=\,\,\,f\,/\,x\] |
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