MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A ring, disc and solid sphere are left from the top of an incline which has sufficient friction for pure rolling. Which will reach the bottom first, if they all have the same mass ‘M’ & radius ‘R’? |
| A. | Ring |
| B. | Disc |
| C. | Solid sphere |
| D. | All will reach together |
| Answer» D. All will reach together | |
| 2. |
A disc is purely rolling down an inclined plane of length ‘l’ & angle θ. What is the value of friction acting on it? Let the mass of the disc be M & radius be R. |
| A. | (Mgsinθ)/3 |
| B. | 0 |
| C. | (4Mgsinθ)/3 |
| D. | (2Mgsinθ)/3 |
| Answer» B. 0 | |
| 3. |
A ring is at the top of the incline of angle and height ‘h’. If it is left from rest and goes down rolling purely, find its speed at the bottom. |
| A. | √ (2gh) m/s |
| B. | √ (gh/sinθ) m/s |
| C. | √ (ghsinθ) m/s |
| D. | √ (gh) m/s |
| Answer» E. | |
| 4. |
A disc is undergoing pure rolling motion on a flat surface. The radius of the disc is 5cm & velocity of centre of mass is 10m/s. What is the ratio of kinetic energy as seen from the ground frame to a frame moving along the disc with a speed of 10m/s? |
| A. | 1:1, kinetic energy is frame independant |
| B. | 3:1 |
| C. | 2:1 |
| D. | 1:3 |
| Answer» C. 2:1 | |