MCQ
If a particle moves in a circle describing equal angles in equal times, its velocity vector
- ARemains constant
- BChanges in magnitude
- ✓Changes in direction
- DChanges both in magnitude and direction
✓
Answer
Correct option: C.
Changes in direction
c
(c)It is always directed in a direction of tangent to circle.
(c)It is always directed in a direction of tangent to circle.
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
A tall cylinder is filled with viscous oil. A round pebble is dropped from the top with zero initial velocity. From the plot shown in indicate the one that represents the velocity (v) of the pebble as a function of time (t):
A uniform rope having some mass hanges vertically from a rigid support. A transverse wave pulse is produced at the lower end. The speed $(v)$ of the wave pulse varies with height $(h)$ from the lower end as:
→Let $\overrightarrow C = \overrightarrow A + \overrightarrow B $ then
→In $5\, minutes,$ a body cools from $75^{\circ} {C}$ to $65^{\circ} {C}$ at room temperature of $25^{\circ} {C}$. The temperature of body at the end of next $5\, minutes$ is $......\,{ }^{\circ} {C} .$
→The moment of inertia of a uniform rod of length $2l$ and mass $m$ about an axis $xx'$ passing through its centre and inclined at an angle $\alpha $ is
→A physical balance has its arms of unequal length. A body weighs $18 \,kg$ if kept in one pan and weighs $8 \,kg$ if kept in the other pan. The true weight of the body is ............. $kg$
→Coatings used on raincoat are waterproof because
The dimensions of Stefan-Boltzmann's constant $\sigma$ can be written in terms of Planck's constant $h$, Boltzmann's constant $k_B$ and the speed of light $c$ as $\sigma=h^\alpha k_B^\beta c^\gamma$. Here,
→Applying the principle of homogeneity of dimensions, determine which one is correct. where $\mathrm{T}$ is time period, $\mathrm{G}$ is gravitational constant, $M$ is mass, $r$ is radius of orbit.
→When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by:
- The cart on the horse.
- The ground on the horse.
- The ground on the cart.
- The horse on the ground.