[" 18.The coordinates of the point "P" o...

[" 18.The coordinates of the point "P" on the line "],[vec r=(hat i+hat j+hat k)+lambda(-hat i+hat j-hat k)" which is nearest to the "],[" origin is "],[[" (a) "((2)/(3),(4)/(3),(2)/(3))," (b) "(-(2)/(3),-(4)/(3),(2)/(3))],[" (c) "((2)/(3),(4)/(3),-(2)/(3))," (d) None of these "]]

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[" 18.The coordinates of the point "P" on the line "],[vec r=(hat i+hat j+hat k)+lambda(-hat i+hat j-hat k)" which is nearest to the "],[" origin is "],[[" (a) "((2)/(3),(4)/(3),(2)/(3))," (b) "(-(2)/(3),-(4)/(3),(2)/(3))],[" (c) "((2)/(3),(4)/(3),-(2)/(3))," (d) None of these "]]

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