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Two inclined frictionless tracks , one g...

Two inclined frictionless tracks , one gradual and the other steep meet at A from where two stones are allowed to slide down from rest , one on each track as shown in figure . Which of the following statement is correct ?

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The correct Answer is:
C
`(h)/(sintheta)=(1)/(2)gsinthetat^(2)`
`rArrt=(sqrt((2h)/(g)))(1)/(sintheta)`

`:'theta_(2)gttheta_(1):.t_(2)ltt_(1)`
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