Assertion - Vector addition of two vector is always greater then their vector subtraction.
Reason At `theta =90^(@)` , addition and subreaction of two vector are equal .

Options

A. If both Assetion and Reason are correct but Reason is the correct explanation of Assertion.
B. If both Assetion and Reason are correct but Reason is not the correct explanation of Assertion.
C. If Asserion is true but Reason is false
D. If Asserion is false but Reason is true

Answer

D

Explanation

(d) `|AxxB|=sqrt(A^(2)+B^(2)+2AB costheta)`
`and |A-B|=sqrt(A^(2)+B^(2)-2AB cos theta)`
`theta=90^(@)`
`|AxxB|=|A-B|=sqrt(A^(2)+B^(2))`