NEET Chemistry Structure Of Atom Parallelogram Law Of Vectors MCQs

Two vectors $\vec{A}$ and $\vec{B}$ have magnitudes A and B respectively. If the magnitude of their resultant vector is $\sqrt{A^2 + B^2 + \sqrt{3}AB}$, which of the following is the most accurate measure of the angle between $\vec{A}$ and $\vec{B}$?

Two forces of magnitudes 5 N and 7 N act on a particle at an angle of 60 degrees. According to the parallelogram law, what is the magnitude of the resultant force?

If two vectors of equal magnitude act at an angle of 120 degrees to each other, what is the magnitude of their resultant vector?

Two forces of 5 N and 10 N act on a point at an angle of 60 degrees. According to the parallelogram law, what is the magnitude of their resultant?

If two vectors of equal magnitude act at an angle of 120 degrees to each other, what is the magnitude of their resultant?

The parallelogram law of vector addition is equivalent to which other method of vector addition?

Two forces of magnitudes $F_1$ and $F_2$ act on a particle. The resultant force has a magnitude $F_R$. If the angle between $F_1$ and $F_2$ is increased, keeping their magnitudes constant, which of the following is true about the magnitude of the resultant force $F_R$?

Three forces $\vec{F_1} = 2\hat{i} + \hat{j}$, $\vec{F_2} = \hat{i} - \hat{j}$, and $\vec{F_3} = x\hat{i} + y\hat{j}$ act on a particle. If the particle is in equilibrium, what are the values of $x$ and $y$?

A boat is rowed across a river with a velocity $v$ perpendicular to the flow of the river. The river flows with a velocity $u$. The magnitude of the resultant velocity of the boat is:

Two forces of 5 N and 10 N act on a point at an angle of 60 degrees to each other. What is the magnitude of their resultant force?