A fighter plane is flying horizontally at a height of 250 m from ground with constant velocity of 500m/s. Ifpasses over a cannon which can fire shell at any direction with a speed of 100 m/s. The duration of time for which the plane in danger of being hit by shell is t sqrt(2)sec. The value of 't' is

A fighter plane is flying horizontally at a height of 250 m from groun

1.	A fighter plane is flying horizontally at a height of 250 m from ground with constant velocity of 500m/s. Ifpasses over a cannon which can fire shell at any direction with a speed of 100 m/s. The duration of time for which the plane in danger of being hit by shell is t sqrt(2)sec. The value of 't' is
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