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If L1 is the line of intersection of p...

If `L_1` is the line of intersection of planes `2x+y+z=1a n d3x+y+2z=2a n dL_2` is line `x=y=z ,`
Which option is correct?
(a)Shortest distance between `L_1a n dL_2i s1/(sqrt(2))` Equation of `L_1i s(x-1)/1=(y+1)/(-1)=(z-0)/(-1)`
(b)Shortest distance between `L_1a n dL_2` is `sqrt(2)` Equation of `L_1i s(x-1)/1=(y+1)/(-2)=(z-0)/(-1)`
(c) None of these

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