MCQ
Which of the following example does not constitute a couple?
- Asteering a car
- Bturning a pen cap
- ✓ball rolls on the floor
- Dclosing the door
✓
Answer
Correct option: C.
ball rolls on the floor
ball rolls on the floor
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
An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the ……..
For perfectly inelastic collision, coefficient of restitution is
A source of sounds emitting waves of frequency $100 Hz$ and an observer $O$ are located at same distance from each other The source is moving with a speed of $19.4 ms ^{-1}$ at an angle of $60^{\circ}$ with the source-observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air $330 ms ^{-1}$ ) is ......
→Three masses is contact as shown. It force $F$ is applied to mass $m _1$, then the contact force acting on mass $m_3$ is -
→Sound waves of wavelength greater than that of audible sound are called ……
The angle for which maximum height and horizontal range are same for a projectile is –
If the density of oxygen is 16 times that of hydrogen, what will be the ratio of the velocities of sound in them?
If the force F acting on a body as a function of x then the work done in moving a body from x = 1 m to x = 3m is
A particle executing simple harmonic motion of amplitude 31.4 cm/s. The frequency of its oscillation is ………
If the angle between force and displacement is acute then the work done is