NEET UG PHYSICS MCQ: MOTION IN PLANE

1 Easy

1 of 1

Application +4 | -1

a \hat{\mathbf{i}}+b \hat{\mathbf{j}}

is a unit vector and it is perpendicular to

\hat{\mathbf{i}}+\hat{\mathbf{j}}

, then value of

a

and

b

View answer and explanation

Correct option: D

None of these

Option D (None of these) is correct because the given conditions lead to

a = \frac{1}{\sqrt{2}}

and

b = -\frac{1}{\sqrt{2}}

or vice versa, which are not among the options.

More Questions from MOTION IN PLANE

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\mathrm{\vec a}\,and\,\mathrm{\vec b}

\mathrm{\vec a}\,and\,\mathrm{\vec b}

\overrightarrow P \,\,.\,\,\overrightarrow Q = 0\,and\,\overrightarrow P \,\, \times \,\,\overrightarrow Q = 0

\overrightarrow Q \,and\,\overrightarrow R

\vec{A}=3 \hat{i}+4 \hat{j}

\vec{B}=6 \hat{i}+8 \hat{j}

A

B

\overrightarrow{\mathrm{A}}

\overrightarrow{\mathrm{B}}

{\cot ^{ - 1}}\left( 2 \right)