The time period of rotation of the sun is 25 days and its radius is 7×108m. The Doppler shift for the light of wavelength 6000 Å emitted from the surface of the sun will be
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a
0.04 Å
b
0.40 Å
c
4.00 Å
d
40.0 Å
answer is A.
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Detailed Solution
Δλ=λvc and v=rω=7×108×2π25×24×3600, c=3×108m/s∴Δλ=0.04Å
The time period of rotation of the sun is 25 days and its radius is 7×108m. The Doppler shift for the light of wavelength 6000 Å emitted from the surface of the sun will be