Vector product of two vectors 2hat{i}, + ,hat{j}, and hat{i}, + ,2hat{j}, is

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3-1.Vectors

easy

Vector product of two vectors $2\hat i\, + \,\hat j\,$ and $\hat i\, + \,2\hat j\,$ is

A

$\hat k\, + \,\hat j\,$

B

$\hat i\, + \,\hat j\,$

C

$3\hat k$

D

$2\hat i$

Solution

$(2\hat i\, \times \,\hat j)\, \times \,\,(\hat i\, + \,2\hat j)\, = \,4\hat k\, – \,\hat k\, = \,\,3\hat k$

Standard 11

Physics

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