Vectors Question 160

Question: What is the unit vector perpendicular to the following vectors $ 2\hat{i}+2\hat{j}-\hat{k} $ and $ 6\hat{i}-3\hat{j}+2\hat{k} $

Options:

A) 0.5 units

B) 1 unit

C) 2 units

D) 4 units

Show Answer

Answer:

Correct Answer: D

Solution:

Area $ =| ,2\hat{i}\times 2\hat{j}, | $

$ =| 4\hat{k} | $

$ =4unit. $