MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
Which phenomenon is shown in the figure? |
| A. | Pair Production |
| B. | Photoelectric Effect |
| C. | Compton effect |
| D. | Pair annihilation |
| Answer» E. | |
| 2. |
The momentum of a photon having energy 10-17J is ____________ |
| A. | 1.11 X 10-26 Kg m/s |
| B. | 2.22 X 10-26 Kg m/s |
| C. | 3.33 X 10-26 Kg m/s |
| D. | 4.44 X 10-26 Kg m/s |
| Answer» D. 4.44 X 10-26 Kg m/s | |
| 3. |
If a star radiates energy at the rate of 5 x 1020 Js-1, what is the rate at which its mass is decreasing? |
| A. | 5.54 x 109 kgs-1 |
| B. | 4.44 x 109 kgs-1 |
| C. | 3.44 x 109 kgs-1 |
| D. | 2.44 x 109 kgs-1 |
| Answer» B. 4.44 x 109 kgs-1 | |
| 4. |
Which of the following is Einstein’s mass energy relation? |
| A. | Ek = (m – m0)c2 |
| B. | E = mc2 |
| C. | E2 – p2c2 = m02c4 |
| D. | Ek = mv2/c2 |
| Answer» C. E2 – p2c2 = m02c4 | |