Let C = A + B then - Vidyadip

MCQ

Let $\overrightarrow C = \overrightarrow A + \overrightarrow B $ then

A
$|\overrightarrow {C|} $ is always greater then $|\overrightarrow A |$
✓
It is possible to have $|\overrightarrow C |\, < \,|\overrightarrow A |$ and $|\overrightarrow C |\, < \,|\overrightarrow B |$
C
$C$ is always equal to $A + B$
D
$C$ is never equal to $A + B$

✓

Answer

Correct option: B.

It is possible to have $|\overrightarrow C |\, < \,|\overrightarrow A |$ and $|\overrightarrow C |\, < \,|\overrightarrow B |$

b
(b) $\vec C + \vec A = \vec B$.

The value of $C$ lies between $A - B$ and $A + B$

$|\vec C|\; < \;|\vec A|\;\;{\rm{or}}\;\;|\vec C|\; < \;|\vec B|$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 3.1 vectors→3.1 vectors — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

A force of $50$ dynes is acted on a body of mass $5$ g which is at rest for an interval of $3$ seconds, then impulse is

The ends of stretched wire of length $L$ are fixed at $x\, = 0$ and $x \,= L$. In one experiment, the displacement of the wire is ${y_1} = A\sin\, \left( {\pi x/L} \right)\sin \,\omega t$ and energy is $E_1$. and in another experiment its displacement is ${y_2} = A\sin \,\left( {2\pi x/L} \right)\sin 2\omega t$ and energy is $E_2$, Then

A block of mass $5\,kg$ is moving horizontally at a speed of $1.5\, m/s$. A perpendicular force of $5\,N$ acts on it for $4 \,sec$. What will be the distance of the block from the point where the force started acting ........... $m$

The maximum possible acceleration of a train moving on a straight track is $10\ m/s^2$ and maximum possible retardation is $5 \ m/s^2.$ If maximum achievable speed of train is $10\ m/s$ then minimum time in which train can complete a journey of $135\ m$ starting from rest and ending at rest, is.........$s$

A projectile is thrown from a point in a horizontal plane such that the horizontal and vertical velocities are $9.8 \;ms ^{-1}$ and $19.6\; ms ^{-1}$. It will strike the plane after covering distance of ........ $m$

The value of $\gamma\left(=\frac{\mathrm{C}_{\mathrm{p}}}{\mathrm{C}_{\mathrm{v}}}\right),$ for hydrogen, hellium and another ideal diatomic gas $X$(whose molecules are not rigid but have an additional vibrational mode), are respectively equal to

A homogeneous rectangular brick lies on a rough inclined plane of very small inclination. Which half part of brick exters greater contact force on plane

A vessel of volume $8\, litre$ contains an ideal gas at $300\, K$ and $2\, atm$ pressure. The gas is allowed to leak till pressure become $125\, kpa$ calculate amount of moles which leak out if temperature remain constant ...... $moles$

A projectile has the same range $R$ for two angles of projection. If $T_1$ and $T_2$ be the times of flight in the two cases, then $R$ is

Match List $I$ with List $II$ :

List $I$	List $II$
$A$ Isothermal Process	$I$ Work done by the gas decreases internal energy
$B$ Adiabatic Process	$II$ No change in internal energy
$C$ Isochoric Process	$III$ The heat absorbed goes partly to increase internal energy and partly to do work
$D$ Isobaric Process	$IV$ No work is done on or by the gas

Choose the correct answer from the options given below :