Suppose a rocketship is receding from the earth at a speed of 2/10 th – McqOptions

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1.	Suppose a rocketship is receding from the earth at a speed of 2/10 th the velocity of light.A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observe on the earth ?
A.	Blue
B.	Orange
C.	Yellow
D.	Yellow-orange
Answer» B. Orange

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