NEET Chemistry Structure Of Atom Triangle Law,Polygon Law & Lamis Theorem MCQs

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

Two forces, each of magnitude F, have a resultant of the same magnitude F. The angle between the two forces is

Two forces, each of magnitude F, have a resultant of the same magnitude F. The angle between the two forces is

The area of the parallelogram represented by the vectors. ${\rm{\vec A}} = 4\hat i + 3\hat j\,\,and\,{\rm{\vec B}} = 2\hat i + 4\hat j$ is

The resultant of two forces at right angle is 5N. When the angle between them is ${120^0}$, the resultant is $\sqrt {13}$. Then the force are

The resultant of two vectors ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ is perpendicular to the vector ${\rm{\vec A}}$ and its magnitude is equal to half of the magnitude of vector ${\rm{\vec B}}$. Then the angle between ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ is

The resultant of two vectors ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ is perpendicular to the vector ${\rm{\vec A}}$ and its magnitude is equal to half of the magnitude of vector ${\rm{\vec B}}$. Then the angle between ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ is

If the resultant of ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ makes angle $\alpha$ with ${\rm{\vec A}}\,and\,\beta$ with ${\rm{\vec B}}$ hen

If the resultant of ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ makes angle $\alpha$ with ${\rm{\vec A}}\,and\,\beta$ with ${\rm{\vec B}}$ hen

Given, ${\rm{\vec P}} = {\rm{\vec A}} + {\rm{\vec B}}\,\,{\rm{and}}\,P = A + B.$ The angle between ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ is