If the chord joining the points \[(at_{1}^{2},\ 2a{{t}_{1}})\] and \[(at_{2}^{2},\ 2a{{t}_{2}})\] of the parabola \[{{y}^{2}}=4ax\] passes through the focus of the parabola, then [MP PET 1993]

If the chord joining the points \[(at_{1}^{2},\ 2a{{t}_{1}})\] and \[(

1.	If the chord joining the points \[(at_{1}^{2},\ 2a{{t}_{1}})\] and \[(at_{2}^{2},\ 2a{{t}_{2}})\] of the parabola \[{{y}^{2}}=4ax\] passes through the focus of the parabola, then [MP PET 1993]
A.	\[{{t}_{1}}{{t}_{2}}=-1\]
B.	\[{{t}_{1}}{{t}_{2}}=1\]
C.	\[{{t}_{1}}+{{t}_{2}}=-1\]
D.	\[{{t}_{1}}-{{t}_{2}}=1\]
Answer» B. \[{{t}_{1}}{{t}_{2}}=1\]

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If the chord joining the points \[(at_{1}^{2},\ 2a{{t}_{1}})\] and \[(at_{2}^{2},\ 2a{{t}_{2}})\] of the parabola \[{{y}^{2}}=4ax\] passes through the focus of the parabola, then [MP PET 1993]

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