MCQ
If net force on a system is zero then
- AIts momentum is conserved
- ✓All of these
- CIts kinetic energy may increase
- DThe acceleration of its a constituent particle may be non-zero
✓
Answer
Correct option: B.
All of these
b
(b)
(b)
Due to internal forces kinetic energy or acceleration of its constituent particle may be non-zero.
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
Assertion : At the first glance, the top surface of the Morpho butterfly's wing appears a beautiful blue-green. If the wind moves the colour changes.
Reason : Different pigments in the wing reflect light at different angles.
Increase in pressure at one point of the enclosed liquid in equilibrium of rest is transmitted equally to all other points of liquid. This is as per ...........
If the intermolecular forces vanish away, the volume occupied by the molecules contained in $4.5 \,kg$ water at standard temperature and pressure will be
→In given figure, $X$ and $Y$ are two long straight parallel conductors each carrying a current of $2\,\, A.$ The force on each conductor is $F$ newtons. When the current in each is changed to $1\, A $ and reversed in direction, the force on each is now
→Particles having positive charges occasionally come with high velocity from the sky towards the earth. On account of the magnetic field of earth, they would be deflected towards the
Two electrons are separated by a distance of $1\,\mathop A\limits^o $. What is the coulomb force between them
→An elementary particle of mass $m$ and charge $+e$ is projected with velocity $v$ at a much more massive particle of charge $Ze$, where $Z > 0$. What is the closest possible approach of the incident particle
→A smaller cube with side $b$ (depicted by dashed lines) is excised from a bigger uniform cube with side $\alpha$ as shown below, such that both cubes have a common vertex $P$. Let $X=a / b$. If the centre of mass of the remaining solid is at the vertex $O$ of smaller cube, then $X$ satisfies
→A person pushes a box kept on a horizontal surface with force of $100\,N$ . In unit vector notation force $\vec F$ can be expressed as ?
→A lens of power $+ 2$ diopters is placed in contact with a lens of power $-1$ diopoter. The combination will behave like
→