MCQ
Which of the following velocity-time graphs represent uniform motion
  • Image
  • B
    Image
  • C
    Image
  • D
    Image

Answer

Correct option: A.
Image
(a) Slope of velocity-time graph measures acceleration. For graph (a) slope is zero. Hence $a=0$ i.e. motion is uniform.

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

Similar questions

If the momentum of a body increases by $0.01 \%$, its kinetic energy will increase by
The fact that electric charges are integral multiples of the fundamental electronic charge was proved experimentally by
Large transformers, when used for some time, become hot and are cooled by circulating oil. The heating of transformer is due to
The ratio of de-Broglie wavelength of a $\alpha$-particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector $\vec{B}$ is perpendicular to the velocity vectors of the $\alpha$-particle and the proton is
For non-conductors, the energy gap is
A sphere at temperature $600 K$ is placed in an environment of temperature is $200 K$. Its cooling rate is $H$. If its temperature reduced to $400 \mathrm{~K}$ then cooling rate in same environment will become
A thermocouple of resistance $1.6 \Omega$ is connected in series with a galvanometer of $8 \Omega$ resistance. The thermocouple develops and e.m.f. of $10 \mu V$ per degree temperature difference between two junctions. When one junction is kept at $0^{\circ} C$ and the other in a molten metal, the galvanometer reads 8 millivolt. The temperature of molten metal, when e.m.f. varies linearly with temperature difference, will be
A liquid of mass $M$ and specific heat $S$ is at a temperature $2 t$. If another liquid of thermal capacity 1.5 times, at a temperature of $\frac{t}{3}$ is added to it, the resultant temperature will be
A magnet of length $0.1 \mathrm{~m}$ and pole strength $10^{-4} \mathrm{~A} . \mathrm{m}$. is kept in a magnetic field of $30 \mathrm{~Wb} / \mathrm{m}^2$ at an angle $30^{\circ}$. The couple acting on it is $\times 10^{-4} \mathrm{Nm}$.
A gas expands $0.25 \mathrm{~m}^3$ at constant pressure $10^3 \mathrm{~N} / \mathrm{m}^2$, the work done is