MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Assertion: A needle placed carefully on the surface of the water may float, whereas a ball of the same material will always sink.
|
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not the correct explanation of the assertion |
| C. | Assertion is true but the reason is false |
| D. | Assertion and reason is false |
| Answer» D. Assertion and reason is false | |
| 2. |
The water droplets in free fall are spherical due to ___________ |
| A. | Gravity |
| B. | Viscosity |
| C. | Surface tension |
| D. | Intermolecular attraction |
| Answer» D. Intermolecular attraction | |
| 3. |
A wooden block is taken to the bottom of a deep, calm lake of water and then released. It rises up with a ___________ |
| A. | Constant acceleration |
| B. | Decreasing acceleration |
| C. | Constant velocity |
| D. | Decreasing velocity |
| Answer» B. Decreasing acceleration | |
| 4. |
Spherical balls of radius R are falling in a viscous fluid of viscosity with a velocity v. The retarding viscous force acting on the spherical ball is ___________ |
| A. | Directly proportional to R but inversely proportional to v |
| B. | Directly proportional to both radius R and velocity v |
| C. | Inversely proportional to both radius R and velocity v |
| D. | Inversely proportional to R but directly proportional to velocity v |
| Answer» C. Inversely proportional to both radius R and velocity v | |
| 5. |
A boat having a length of 3m and breadth 2m is floating on a lake. The boat sinks by one cm when a man gets on it. What is the mass of the man? |
| A. | 6kg |
| B. | 60kg |
| C. | 16kg |
| D. | 600kg |
| Answer» C. 16kg | |
| 6. |
Assertion: A hydrogen filled balloon stops using after it has attained a certain height in the sky.
|
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not the correct explanation of the assertion |
| C. | Assertion is true but the reason is false |
| D. | Assertion and reason is false |
| Answer» D. Assertion and reason is false | |
| 7. |
When the temperature is increased, the angle of contact of a liquid? |
| A. | Increase |
| B. | Decrease |
| C. | Remains the same |
| D. | First increases and then decreases |
| Answer» B. Decrease | |
| 8. |
In incompressible fluid flows steadily through a cylindrical pipe which had a radius 2R at point A and R at a point B further along the flow direction. If the velocity at A is v, then that at B is? |
| A. | v/2 |
| B. | v |
| C. | 2v |
| D. | 4v |
| Answer» E. | |