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If r.a = r.b=r.c = 0 for some non-zero vector r, then the value of [a b c], is A. 2 B. 3 C. 0 D. none of these

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If r.a = r.b=r.c = 0 for some non-zero vector r, then the value of [a b c], is

A. 2

B. 3

C. 0

D. none of these

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Correct option is C. 0

Here,  \(\vec r.\vec a=\vec r.\vec b=\vec r.\vec c=0\)

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