MCQ
Consider three point objects $P, Q$ and $R \cdot P$ and $Q$ repel each other, while $P$ and $R$ attract. What is the nature of force between $Q$ and $R$ ?
- ARepulsive force
- ✓Attractive force
- CNo force
- DNone of these
✓
Answer
Correct option: B.
Attractive force
b
(b)
(b)
Since $A$ repel $B$,$A$ and $B$ have same nature of charge.
And as $A$ attracts $C,A$ and $C$ have opposite nature of charge.
Hence,$B$ and $C$ also has opposite nature of charge. And, hence nature of force between $B$ and $C$ will be attractive.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the reported figure, heat energy absorbed by a system in going through a cyclic process is $......\,\pi J$
→A wire $A$, bent in the shape of an arc of a circle, carrying a current of $2\, A$ and having radius $2\, cm$ and another wire $B ,$ also bent in the shape of arc of a circle, carrying a current of $3\, A$ and having radius of $4\, cm ,$ are placed as shown in the figure. The ratio of the magnetic fields due to the wires $A$ and $B$ at the common centre $O$ is
→If $50$ joule of work must be done to move an electric charge of $2 \,C$ from a point, where potential is $-10$ volt to another point, where potential is $V$ volt, the value of $V$ is ......... $V$
→The pressure exerted by an electromagnetic wave of intensity $I (watts/m^2)$ on a nonreflecting surface is [$c$ is the velocity of light]
→A heating coil can heat the water of a vessel from $20\,^oC$ to $60\,^oC$ in $30$ minutes. Two such heating coils are put in series and then used to heat the same amount of water through the same temperature range. The time taken now will be ............ $min$ (neglecting thermal capacity of the coils)
→If Poission's ratio $\sigma $ is $ - \frac{1}{2}$ for a material, then the material is
→A lift of mass $1000\,kg$ is moving with an acceleration of $1$ $m/{s^2}$ in upward direction. Tension developed in the string, which is connected to the lift, is ........... $N$ $(g= 9.8\ m/{s^2})$
→The displacement time graph of a particle executing $S.H.M.$ is given in figure: (sketch is schematic and not to scale) Which of the following statements is are true for this motion?
→$(A)$ The force is zero $t=\frac{3 T}{4}$
$(B)$ The acceleration is maximum at $t=T$
$(C)$ The speed is maximum at $t =\frac{ T }{4}$
$(D)$ The $P.E.$ is equal to $K.E.$ of the oscillation at $t=\frac{T}{2}$
A large number of bullets are fired in all directions with same speed $v$. What is the maximum area on the ground on which these bullets will spread
→If $\overrightarrow P .\overrightarrow Q = PQ,$ then angle between $\overrightarrow P $and $\overrightarrow Q $ is ....... $^o$
→