Q 2631780622.    

Assertion : If `vec r = x hat i + y hat j + z hat k` ' then equation `vec r xx (2 hat i - hat j + 3 hat k) = 3 hat i + hat k` represents a straight line.

Reason : If `vec r = x hat i + y hat j + z hat k` , then equation `vec r xx ( hat i + 2 hat j - 3 hat k= 2 hat i - hat j` represents a st. line

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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