A) f
B) \[\frac{3f}{2}\]
C) 2 f
D) \[\frac{f}{2}\]
Correct Answer: C
Solution :
Lateral magnitude = v/u; Mag. along axis \[=\left| \frac{dv}{du} \right|=\frac{{{u}^{2}}}{{{v}^{2}}}=1\] if v = u, \[\therefore \] u =You need to login to perform this action.
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