MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
Calculate the de-Broglie wavelength of an electron which has been accelerated from rest on application of potential of 400volts. |
| A. | 0.1653 Amstrong |
| B. | 0.5125 Amstrong |
| C. | 0.6135 Amstrong |
| D. | 0.2514 Amstrong |
| Answer» D. 0.2514 Amstrong | |
| 2. |
Can the diameter of a thread be measure by using a scale? |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 3. |
An instrument cannot be precise without being accurate. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 4. |
All physical quantities have dimensions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
How many dimensions of the world are there? |
| A. | 7 |
| B. | 3 |
| C. | 2 |
| D. | 4 |
| Answer» B. 3 | |
| 6. |
AN_INSTRUMENT_CANNOT_BE_PRECISE_WITHOUT_BEING_ACCURATE.?$ |
| A. | False |
| B. | True |
| Answer» B. True | |
| 7. |
Calculate the de-Broglie wavelength of an electron which has been accelerated from rest on application of potential of 400volts. |
| A. | 0.1653 Amstrong |
| B. | 0.5125 Amstrong |
| C. | 0.6135 Amstrong |
| D. | 0.2514 Amstrong |
| Answer» D. 0.2514 Amstrong | |
| 8. |
Can_the_diameter_of_a_thread_be_measure_by_using_a_scale?$ |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 9. |
All physical quantities have dimensions? |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Which of the following is a systematic error? |
| A. | Constant error |
| B. | Least count error |
| C. | Gross error |
| D. | Personal error |
| Answer» E. | |
| 11. |
If the unit of force is 1kN, unit of length 1km and the unit of time is 100s, what will be the unit of mass? |
| A. | 1000 kg |
| B. | 10<sup>4</sup> kg |
| C. | 100 kg |
| D. | 10<sup>5</sup> kg |
| Answer» C. 100 kg | |
| 12. |
Which of the following is a dimensional constant? |
| A. | e |
| B. | Area |
| C. | Specific gravity |
| D. | Gravitational constant |
| Answer» E. | |
| 13. |
What is the dimensional formula for Gravitational constant? |
| A. | ML<sup>2</sup> T<sup>(-3)</sup> |
| B. | ML<sup>(-1)</sup> T<sup>(-2)</sup> |
| C. | ML<sup>(-1)</sup> T<sup>(-1)</sup> |
| D. | M<sup>(-1)</sup> L<sup>3</sup> T<sup>(-2)</sup> |
| Answer» E. | |
| 14. |
How many dimensions of the world is there? |
| A. | 7 |
| B. | 3 |
| C. | 2 |
| D. | 4 |
| Answer» B. 3 | |
| 15. |
The average life of an Indian is 56 years. Find the number of times the human heart beats in the life of an Indian, if the heat beats once in 0.8 s. |
| A. | 20.4√ó10<sup>9</sup> times |
| B. | 2.5√ó10<sup>9</sup> times |
| C. | 2.2√ó10<sup>9</sup> times |
| D. | 6.1√ó10<sup>9</sup> times |
| Answer» D. 6.1‚Äö√†√∂‚àö‚â•10<sup>9</sup> times | |
| 16. |
Which of the following is used for measuring long time intervals? |
| A. | Electrical oscillators |
| B. | Atomic clocks |
| C. | Decay of elementary particles |
| D. | Radioactive dating |
| Answer» E. | |