A star moves away from earth at speed \( 0.8 \mathrm{c} \) while emitting light of frequency \( ... VIDEO
A star moves away from earth at speed \( 0.8 \mathrm{c} \) while emitting light of frequency \( 6 \times 10^{14} \mathrm{~Hz} \). What
P frequency will be observed on the earth ?
W (c = speed of light)
(1) \( 0.24 \times 10^{14} \mathrm{~Hz} \)
(2) \( 1.2 \times 10^{14} \mathrm{~Hz} \)
(3) \( 2 \times 10^{14} \mathrm{~Hz} \)
(4) \( 150 \times 10^{14} \mathrm{~Hz} \)
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