Question:medium

Define the length of \( a\hat{i} + b\hat{j} + c\hat{k} \) as \( |a| + |b| + |c| \). This definition coincides with the usual definition if and only if

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Define the length of $a\hati+b\hatj+c\hatk$ as $|a|+|b|+|c|$. This definition coincides with the usual definition iff

Updated On: Apr 15, 2026

$a=b=c=0$
any two of a, b and c are zero
any one of a, b and c is zero
$a+b+c=0$

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The Correct Option is B

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