wave-optics

Question: Light coming from a star is observed to have a wavelength of 3737 Å, while its real wavelength is 3700 Å. The speed of the star relative to the earth is [Speed of light $3 \times {10^8}m/s$]

1) $3 \times {10^5}m/s$

2) $3 \times {10^6}m/s$

3) $3.7 \times {10^7}m/s$

4) $3.7 \times {10^6}m/s$

Solution:

Explanation: No Explanation

Doppler's Effect of Light

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