Vibrations and waves questions | form five Physics
Find Vibrations and waves examination questions, form five Physics in acaproso.com
| # | Question |
|---|---|
| 1 | Sunlight is reflected from a calm lake. The refllected sunlight is totally polarized. What is the angle between the sun and the horizon? Mathematical Calculation |
| 2 | State four conditions for sustained interference of light. Short answers |
| 3 | In a Young`s double slit experiment the interval between the slit is 0.2mm. For the light of wavelength 6.0x10-7m, interference fringes are formed on a screen at a distance of 0.8m. Find the distance of the second dark fringe from the central fringe. Mathematical Calculation |
| 4 | Distinguish between diffraction and diffraction grating. Short answers |
| 5 | A parallel beam of the monochromatic light is incident normally on a diffraction grating. The angle between the two first -order spectra on either side of the normal is 30o. Assume that the wavelength of the light is 5893x10-10m; find the number of ruling per mm on the grating and the greatest number of bright images obtained. Mathematical Calculation |
| 6 | What is meant by crossed polaroids? Short answers |
| 7 | Briefly describe the appearance of fringes produced by monochromatic light. Short answers |
| 8 | Give two difference between diffracting grating spectra and prism spectra. Short answers |
| 9 | A diffraction grating used at normal incidence gives a yellow line, Mathematical Calculation |
| 10 | State the Huygens principle of wave construction. Short answers |
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