MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the momentum of a photon of wavelength λ? |
| A. | \(\frac {hv}{c}\) |
| B. | Zero |
| C. | \(\frac {h\lambda }{c^2}\) |
| D. | \(\frac {h\lambda }{c}\) |
| Answer» B. Zero | |
| 2. |
What is the energy of a photon of wavelength λ? |
| A. | hcλ |
| B. | \(\frac {hc}{\lambda }\) |
| C. | \(\frac {\lambda }{hc}\) |
| D. | \(\frac {\lambda h}{c}\) |
| Answer» C. \(\frac {\lambda }{hc}\) | |
| 3. |
What will be the photon energy for a wavelength of 5000 angstroms, if the energy of a photon corresponding to a wavelength of 7000 angstroms is 4.23 × 10-19 J? |
| A. | 0.456 eV |
| B. | 5.879 eV |
| C. | 3.701 eV |
| D. | 1.6 × 10-19 eV |
| Answer» D. 1.6 × 10-19 eV | |