Optics Question 251
Question: A star moves away from earth at speed 0.8 c while emitting light of frequency . What frequency will be observed on the earth (in units of 1014 Hz) (c = speed of light)
[MP PMT 1995]
Options:
A) 0.24
B) 1.2
C) 30
D) 3.3
Show Answer
Answer:
Correct Answer: B
Solution:
Observed frequency