(P+Q) is a unit vector along X-axis .If p= hati- hatj+ hatK then what is barQ

Question

(P+Q) is a unit vector along X-axis .If p= hati- hatj+ hatK then what is barQ (A)  hati+ hatj- hatK (B)  hatj- hatK (C)  hati+ hatj+ hatK (D)  hatj+ hatK

Tardigrade Admin · Accepted Answer

Correct answer is (b) hatj- hatK

Q. $(P + Q)$ is a unit vector along X-axis .If $p = \hat{i} - \hat{j} + \hat{K}$ then what is $\overset{ˉ}{Q}$

$\hat{i} + \hat{j} - \hat{K}$

$\hat{j} - \hat{K}$

$\hat{i} + \hat{j} + \hat{K}$

$\hat{j} + \hat{K}$

Correct answer is (b) $\hat{j} - \hat{K}$

Q. (P+Q​) is a unit vector along X-axis .If p​=i^−j^​+K^ then what is Qˉ​

i^+j^​−K^

j^​−K^

i^+j^​+K^

j^​+K^

Correct answer is (b) j^​−K^

Q. $(P + Q)$ is a unit vector along X-axis .If $p = \hat{i} - \hat{j} + \hat{K}$ then what is $\overset{ˉ}{Q}$

$\hat{i} + \hat{j} - \hat{K}$

$\hat{j} - \hat{K}$

$\hat{i} + \hat{j} + \hat{K}$

$\hat{j} + \hat{K}$

Correct answer is (b) $\hat{j} - \hat{K}$