Solveeit Logo

Question

Mathematics Question on Vector Algebra

Let a=4i^j^+3k^\overrightarrow a = 4\hat i -\hat j + 3\hat k and b=2i^+j^2k^\overrightarrow b = -2\hat i + \hat j-2\hat k. Then
(A) a\overrightarrow a is a unit vector
(B) a×b=i^+2j^+2k^\overrightarrow a\times \overrightarrow b=-\hat i + 2\hat j + 2\hat k
(C) a\overrightarrow a and b\overrightarrow b are parallel vectors
(D) a\overrightarrow a and b\overrightarrow bare neither parallel nor perpendicular vectors
Choose the correct answer from the options given below :

A

(B) and (C) Only

B

(C) and (D) Only

C

(D) Only

D

(B) and (D) Only

Answer

(B) and (D) Only

Explanation

Solution

The correct option is (D):(B) and (D) Only