MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
A radio station broadcasts its programme at 219.3 metre wavelength. Determine the frequency of radio waves if velocity of radio waves is 3×108 m/s. |
| A. | 7.31×10-7 Hz |
| B. | 1.954×10-6 Hz |
| C. | 1.368×106 Hz |
| D. | 6.579×1010 Hz |
| Answer» D. 6.579×1010 Hz | |
| 2. |
Which of the following is associated with an electron microscope? |
| A. | Matter waves |
| B. | Electrical waves |
| C. | Magnetic waves |
| D. | Electromagnetic waves |
| Answer» B. Electrical waves | |
| 3. |
Which of the following is called as non-mechanical waves? |
| A. | Magnetic waves |
| B. | Electromagnetic waves |
| C. | Electrical waves |
| D. | Matter waves |
| Answer» C. Electrical waves | |
| 4. |
Wien’s displacement law holds good only for shorter wavelength. |
| A. | False |
| B. | True |
| Answer» C. | |
| 5. |
Rayleigh-Jean’s law holds good for which of the following? |
| A. | Shorter wavelength |
| B. | Longer wavelength |
| C. | High temperature |
| D. | High energy |
| Answer» C. High temperature | |
| 6. |
The energy distribution is not uniform for any given temperature in a perfect black body. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following is the characteristic of a black body? |
| A. | A perfect absorber but an imperfect radiator |
| B. | A perfect radiator but an imperfect absorber |
| C. | A perfect radiator and a perfect absorber |
| D. | A perfect conductor |
| Answer» D. A perfect conductor | |
| 8. |
WHICH_OF_THE_FOLLOWING_IS_ASSOCIATED_WITH_AN_ELECTRON_MICROSCOPE??$ |
| A. | Matter waves |
| B. | Electrical waves |
| C. | Magnetic waves |
| D. | Electromagnetic waves |
| Answer» B. Electrical waves | |
| 9. |
Calculate the de-Broglie wavelength of an electron which has been accelerated from rest on application of potential of 400volts.$ |
| A. | 0.1653 √Ö |
| B. | 0.5125 √Ö |
| C. | 0.6135 √Ö |
| D. | 0.2514 √Ö |
| Answer» D. 0.2514 ‚Äö√†√∂‚àö√± | |
| 10. |
A_radio_station_broadcasts_its_programme_at_219.3_metre_wavelength._Determine_the_frequency_of_radio_waves_if_velocity_of_radio_waves_is_3√ó108_m/s.$# |
| A. | 7.31√ó10<sup>-7</sup> Hz |
| B. | 1.954√ó10<sup>-6</sup> Hz |
| C. | 1.368√ó10<sup>6</sup> Hz |
| D. | 6.579√ó10<sup>10</sup> Hz |
| Answer» D. 6.579‚Äö√†√∂‚àö‚â•10<sup>10</sup> Hz | |
| 11. |
Which of the following is called as non-mechanical waves? |
| A. | Magnetic waves |
| B. | Electromagnetic waves |
| C. | Electrical waves |
| D. | Matter waves |
| Answer» C. Electrical waves | |
| 12. |
Compton shift depends on which of the following? |
| A. | Incident radiation |
| B. | Nature of scattering substance |
| C. | Angle of scattering |
| D. | Amplitude of frequency |
| Answer» D. Amplitude of frequency | |
| 13. |
What is Compton shift? |
| A. | Shift in frequency |
| B. | Shift in charges |
| C. | Shift in radiation |
| D. | Shift in wavelength |
| Answer» E. | |
| 14. |
Which of the following does not affect the photon? |
| A. | Magnetic or electric field |
| B. | Light waves |
| C. | Gravity |
| D. | Current |
| Answer» B. Light waves | |
| 15. |
Wien’s displacement law holds good only for shorter wavelength.$ |
| A. | False |
| B. | True |
| Answer» C. | |
| 16. |
Rayleigh-Jean’s law holds good for which of the following?$ |
| A. | Shorter wavelength |
| B. | Longer wavelength |
| C. | High temperature |
| D. | High energy |
| Answer» C. High temperature | |
| 17. |
The energy distribution is not uniform for any given temperature in a perfect black body. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
Which of the following is the characteristic of a black body? |
| A. | A perfect absorber but an imperfect radiator |
| B. | A perfect radiator but an imperfect absorber |
| C. | A perfect radiator and a perfect absorber |
| D. | A perfect conductor |
| Answer» D. A perfect conductor | |