Vector Algebra Question 251
Question: If the position vectors of the points A and B are $ c=(2,-2,,4) $ and $ 3\mathbf{i}-\mathbf{j}-3\mathbf{k}, $ then what will be the position vector of the mid-point of AB
[MP PET 1992]
Options:
A) $ \mathbf{i}+2\mathbf{j}-\mathbf{k} $
B) $ 2\mathbf{i}+\mathbf{j}-2\mathbf{k} $
C) $ 2\mathbf{i}+\mathbf{j}-\mathbf{k} $
D) $ \mathbf{i}+\mathbf{j}-2\mathbf{k} $
Show Answer
Answer:
Correct Answer: B
Solution:
- $ \frac{3\mathbf{i}-\mathbf{j}-3\mathbf{k}+\mathbf{i}+3\mathbf{j}-\mathbf{k}}{2}=2\mathbf{i}+\mathbf{j}-2\mathbf{k}. $
BETA
