1.

A rod of length 2 units whose one end is (1, 0, -1) and other end touches the plane x - 2y + 2z + 4=0, then

Answer»

the rod sweeps the figure WHOSE volume is `pi` cubic units
the area of the regio which the rod traces on the plnae is `2pi`
the length of projection of the rod on the PLANE is `sqrt3` units
the centre of the region which the rod traces on the plane is `((2)/(3), (2)/(3),(-5)/(3))`

ANSWER :A::C::D


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