In this question, a statement of assertion 
is followed by a statement of reason 
. Mark
the correct choice as:
Assertion: A vector has both magnitude and direction.
Reason: A physical quantity cannot be called as a vector if its magnitude is zero.
Text Solution
Verified by ExpertsThe correct answer is:
C
: If a vector quantity has zero magnitude then it is called a null vector. That quantity may have
some direction even if its magnitude is zero.
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