A rectangular voltage wave is impressed on a loss-free overhead line,
with the far end of the line being short-circuited. On reaching the end of this
line is reflected back with the voltage wave with is reflected back with the
voltage wave with
The current wave positive sign, but negative sign.
The current wave negative sign, but positive sign.
Both the current and the voltage waves are reflected with positive sign.
Both the current and the voltage waves are reflected with negative sign.
The current wave positive sign, but negative sign.
For short circuit 
Where,
Load impedance
Surge impedance
Coefficient of reflection for current wave
Coefficient of reflection for voltage wave
Hence, the correct option is (A).
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