1.

Assertion (A) : The equation ax+by+s=0 represents a plane parallel to z-axis. Reason (R ) : If the plane ax+by+cz+d=0 perpendicular to the xy-plane then c=0.

Answer»

Both (A) and (R) are TRUE R is correct REASON of A
Both (A) and (R) are true R is not correctreason of A
(A) is true but (R) is FALSE
(A) is false but (R) is true

Answer :A


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