A light source approaches the observer with a velocity of 0.5 cm. Doppler shift for light of wavelength 550 Å is :
Correct answer: B. 1833 Å
- A. 616 Å
- B. 1833 Å
- C. 5500 Å
- D. 6160 Å
Explanation
When a light source approaches the observer, there is a shift in the wavelength of light observed known as Doppler shift. The formula for calculating Doppler shift in such cases involves the velocity of the light source and the original wavelength of light. In this specific scenario, the correct Doppler shift for light of wavelength 550 Å when the light source approaches with a velocity of 0.5 cm is 1833 Å. This can be calculated using the Doppler shift formula. The other options provided are incorrect as they do not accurately calculate the Doppler shift in this context.
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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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