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3D Geometry question

2006 · Shift 0 · Q66
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  5. /2006 · Shift 0 · Q66

3D Geometry question

2006 · Shift 0 · Q66

JEE MainMathematics3D GeometryMCQ+4 / −1
The two lines x=ay+b,z=cy+d;x=ay+b, z=cy+d;x=ay+b,z=cy+d; and x=a′y+b′,z=c′y+d′x=a'y+b' ,z=c'y+d'x=a′y+b′,z=c′y+d′ are perpendicular to each other if :
  1. A
    aa′+cc′=−1aa'+cc'=-1aa′+cc′=−1
  2. B
    aa′+cc′=1aa'+cc'=1aa′+cc′=1
  3. C
    aa′+cc′=−1{a \over {a'}} + {c \over {c'}} = - 1a′a​+c′c​=−1
  4. D
    aa′+cc′=1{a \over {a'}} + {c \over {c'}} = 1a′a​+c′c​=1
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