MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
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. |
The binding energy of an electron to a proton (i.e., hydrogen atom) is 13.6 eV. The loss of mass in the formation of one atom of hydrogen is _____________ |
| A. | 2.42 X 10-35 Kg |
| B. | 3.34 X 10-35 Kg |
| C. | 4.58 X 10-35 Kg |
| D. | 5.19 X 10-35 Kg |
| Answer» B. 3.34 X 10-35 Kg | |
| 4. |
What will be the rest energy of an electron? |
| A. | 0.41 MeV |
| B. | 0.51 MeV |
| C. | 0.61 MeV |
| D. | 0.71 MeV |
| Answer» C. 0.61 MeV | |
| 5. |
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 | |
| 6. |
In Relativistic case, as the velocity of the particle approaches the speed of light, the Kinetic energy approaches ___________ |
| A. | Zero |
| B. | Kinetic Energy as in Non-Relativistic case |
| C. | Rest Energy |
| D. | Infinite |
| Answer» E. | |
| 7. |
Which of the following is the momentum-energy relation? |
| A. | E2 – p2c2 = m02c2 |
| B. | E2 – p2c2 = m02c4 |
| C. | E2 – p2c2 = m02c3 |
| D. | E2 – p2c2 = m0c2 |
| Answer» C. E2 – p2c2 = m02c3 | |
| 8. |
For Pair Production phenomenon to occur to photon must have energy, greater than or equal to ____________ |
| A. | 0.51 MeV |
| B. | 1.02 MeV |
| C. | 0.32 MeV |
| D. | 0.85 MeV |
| Answer» C. 0.32 MeV | |
| 9. |
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 | |
| 10. |
The basic theorem/principle used to obtain mass-energy relation is _____________ |
| A. | Heisenberg’s Uncertainty Principle |
| B. | Work-Energy Theorem |
| C. | Momentum Conservation Theorem |
| D. | Maxwell Theorem |
| Answer» C. Momentum Conservation Theorem | |