Vector Algebra Question 332
Question: If a is non zero vector of modulus a and m is a non-zero scalar, then ma is a unit vector if
[MP PET 2002]
Options:
A) $ m=\pm 1 $
B) $ m=|\mathbf{a}| $
C) $ m=\frac{1}{|\mathbf{a}|} $
D) $ m=\pm ,2 $
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Answer:
Correct Answer: C
Solution:
- ma is a unit vector if and only if $ |m,\mathbf{a}| $
Þ $ m $ $ |a|,=1 $
Þ $ m=\frac{1}{|\mathbf{a}|} $ .
BETA
