MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
The mass of a photon with wavelength 3.6 is _____________ |
| A. | 3.139 X 10<sup>-33</sup> kg |
| B. | 4.139 X 10<sup>-33</sup> kg |
| C. | 5.139 X 10<sup>-33</sup> kg |
| D. | 6.139 X 10<sup>-33</sup> kg |
| Answer» E. | |
| 2. |
An electron makes a transition from n = 7 state to n = 3 state in the hydrogen atom. What is the frequency of the emitted photon? |
| A. | 2 X 10<sup>14</sup> Hz |
| B. | 3 X 10<sup>14</sup> Hz |
| C. | 4 X 10<sup>14</sup> Hz |
| D. | 5 X 10<sup>14</sup> Hz |
| Answer» C. 4 X 10<sup>14</sup> Hz | |
| 3. |
The wavelength of a photon is 5000 . The energy of the photon is ___ |
| A. | 3.47 eV |
| B. | 2.41 eV |
| C. | 6.78 eV |
| D. | 2.12 eV |
| Answer» C. 6.78 eV | |
| 4. |
What is the frequency of a photon having energy 2.1 X 10-30 J? |
| A. | 3.1 X 10<sup>13</sup> Hz |
| B. | 4.1 X 10<sup>13</sup> Hz |
| C. | 5.1 X 10<sup>13</sup> Hz |
| D. | 6.1 X 10<sup>13</sup> Hz |
| Answer» C. 5.1 X 10<sup>13</sup> Hz | |
| 5. |
Which theory was first to consider that light requires no medium for its propagation? |
| A. | Huygen s Wave Theory of Light |
| B. | Maxwell s Electromagnetic Theory |
| C. | Quantum theory of light |
| D. | Corpuscular theory |
| Answer» C. Quantum theory of light | |
| 6. |
Michaelson-Morley experiment ruled out the existence of __________ |
| A. | Luminiferous Ether |
| B. | Wave nature of light |
| C. | Particle nature of light |
| D. | Corpuscles |
| Answer» B. Wave nature of light | |
| 7. |
Huygen s wave theory of light considered light to be ____________ |
| A. | Made up of particles |
| B. | Longitudinal Waves |
| C. | Transverse Waves |
| D. | Of dual nature |
| Answer» C. Transverse Waves | |
| 8. |
Who gave the quantum theory of light? |
| A. | Albert Einstein |
| B. | Heisenberg |
| C. | Michaelson Morley |
| D. | Max Planck |
| Answer» E. | |
| 9. |
How is light emitted? |
| A. | Klystron valves |
| B. | Radioactive decay of the nucleus |
| C. | Transmission of high energy electrons from an excited state to a lower state |
| D. | Acceleration of electrons |
| Answer» D. Acceleration of electrons | |