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Questions  

The equation of a line passing through the point on z-axis at a distance of 1 unit from the origin and having direction ratios 1,0,1 is 

a
x−31=y−21=z3
b
x−01=y−00=z−1−1
c
x3=y1=z1
d
x3=y0=z0

detailed solution

Correct option is B

The coordinates of the point which are on  z-axis and at a distance of  1 units from the origin is 0,0,1 Therefore, the equation of the line passing through the point  0,0,1and parallel to the line whose direction ratio are 1,0,−1 is   x−01=y−00=z−1−1

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