Back to MOTION IN PLANE

NEET UG PHYSICS MCQ: MOTION IN PLANE

1 Easy

1 of 1

Application +4 | -1

If

\left| {\bar A + \bar B} \right| = \left| {\bar A} \right| = \left| {\bar B} \right|\,

, the angle between

\overrightarrow A

and

\overrightarrow B

is

View answer and explanation

Correct option: C

120^\circ

Option C (

120^\circ

) is correct because it satisfies the condition

\left| {\bar A + \bar B} \right| = \left| {\bar A} \right| = \left| {\bar B} \right|

using the law of cosines.

More Questions from MOTION IN PLANE

Practice All Chapter MCQs →

Acceleration due to gravity: The magnitudes of the two vectors

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

are a and b respectively. The vector product of

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

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

, then the angle between

\overrightarrow Q \,and\,\overrightarrow R

is What happens, when we multiply a vector by -2 ? Which of the following is not true? If

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

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

A

B

are the magnitudes of

\overrightarrow{\mathrm{A}}

\overrightarrow{\mathrm{B}}

The wind appears to blow from the north to a man moving in the north-east direction. When he doubles his velocity the wind appears to move in the direction

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

east of north. The actual direction of the wind is