MCQOPTIONS
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MCQOPTIONS
This section includes 205 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
A hollow sphere of radius R, a hollow cube of side R and thin circular plate of radius R made up of the same material, are all heated to 20 C above room temperature. When left to cool in the room, which of them will reach the room temperature first? |
| A. | Circular plate |
| B. | Cube |
| C. | Sphere |
| D. | All of them will reach the room temperature at the same time |
| Answer» D. All of them will reach the room temperature at the same time | |
| 202. |
The temperature of a body is an indicator of |
| A. | The total energy of the molecules of the body |
| B. | The average energy of the molecules of the body |
| C. | The total velocity of the molecules of the body |
| D. | The average kinetic energy of the molecules of the body |
| Answer» E. | |
| 203. |
At a given volume and temperature, the pressure of a gas |
| A. | Varies inversely as its mass |
| B. | Varies inversely as the square of its mass |
| C. | Varies linearly as its mass |
| D. | Is independent of its mass |
| Answer» D. Is independent of its mass | |
| 204. |
The temperature of water at the bottom of a waterfall is higher than that at the top because |
| A. | Water at the bottom has greater potential energy |
| B. | The surface at the bottom provides heat |
| C. | Kinetic energy of falling water is converted into heat |
| D. | Falling water absorbs heat from the surroundings |
| Answer» D. Falling water absorbs heat from the surroundings | |
| 205. |
Paraffin wax contracts on solidification the melting point of wax |
| A. | Increases with increase of pressure |
| B. | Decreases with increase of pressure |
| C. | Is independent of pressure |
| D. | None of the above |
| Answer» B. Decreases with increase of pressure | |