Kinematics Question 437
Question: If two vectors $ 2\hat{i}+3\hat{j}+\hat{k} $ and $ -4\hat{i}-6\hat{j}-\lambda \hat{k} $ are parallel to each other, then value of $ \lambda $ it’s
Options:
A) 0
B) 2
C) 3
D) 4
Show Answer
Answer:
Correct Answer: B
Solution:
[b] The coefficient of $ \hat{i},\hat{j} $
and $ \hat{k} $ should bear a constant ratio.
or $ \frac{2}{-4}=\frac{3}{-6}=\frac{1}{-\lambda } $ .
BETA
