MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The moment of inertia of a body about a given axis is 1.2kgm2. Initially, the body at rest. In order to produce a rotational kinetic energy of 1500 joule, an angular acceleration of 25radian/sec2 must be applied about the axis for duration of ___________ |
| A. | 4s |
| B. | 2s |
| C. | 8s |
| D. | 10s |
| Answer» C. 8s | |
| 2. |
Statement 1: If polar ice melts, days will be longer. |
| A. | Statement 2: Moment of inertia decreases and thus angular velocity increases. |
| B. | Both statement 1 and 2 are true and statement2 is the correct explanation of the statement1 |
| C. | Both statement 1 and 2 are true but the statement2 is not the correct explanation of the statement1 |
| D. | Statement 1 is true but statement 2 is false |
| E. | Statement 1 and 2 are false |
| Answer» B. Both statement 1 and 2 are true and statement2 is the correct explanation of the statement1 | |
| 3. |
Statement 1: If there is no external torque on the body about its centre of mass, then the velocity of the centre of mass remains constant. |
| A. | Statement 2: The linear momentum of the isolated system remains constant. |
| B. | Statements 1 and 2 are true and statement 2 is the correct explanation of statement 1 |
| C. | Statement one and two are true and statement2 is not the correct explanation of statement1 |
| D. | Statement 1 is true, statement 2 is false |
| E. | Statement 2 is true, statement 1 is false |
| Answer» E. Statement 2 is true, statement 1 is false | |