Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let 
and a vector 
be such that 
and 
. If 
, then 
is equal to
Text Solution
Verified by ExpertsThe correct answer is:
A
To solve the problem, we start with the given equation:
Expanding this, we have:
Let 
. Substituting this into the equation, we get:
Now, we take the dot product of both sides with 
:
Since the dot product 
is zero (the
dot product of any vector with the cross product of itself with another vector is zero), we have:
Thus, the magnitude of 
is:
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