Optics Question 255
Question: The wavelength of light observed on the earth, from a moving star is found to decrease by 0.05%. Relative to the earth the star is
[MP PMT/PET 1998]
Options:
A) Moving away with a velocity of
B) Coming closer with a velocity of
C) Moving away with a velocity of
D) Coming closer with a velocity of
Show Answer
Answer:
Correct Answer: B
Solution:
Therefore v = 1.5 x 105 m/s (Since wavelength is decreasing, so star coming closer)
