Doppler shift for the light of wavelength 6000 Å emitted from the sun is 0.04 Å. If the radius of the sun is 7 x 10^8 m then the time period of rotation of the sun will be :
Correct answer: D. 25 days
- A. 30 days
- B. 365 days
- C. 24 hours
- D. 25 days
Explanation
The correct answer is 25 days. The time period of rotation of the sun can be determined by relating the Doppler shift of light emitted from the sun to its radius. By calculating the velocity of rotation using the given values, the time period can be found. Options A, B, and C are incorrect as they do not consider the specific calculations and concepts related to the Doppler shift and rotation period of the sun.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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