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Light emitted from a distant star is obs...

Light emitted from a distant star is observed at frequency 5000 MHz for the star stationary with respect to us. If the star starts approaching us with speed `6xx10^(5)m//s`. Then the observed frequency will be

Text Solution

Verified by Experts

`(Delta f)/f=v/c`
`Delta f=(5 times 10^9 times 6 times 10^5)/(3 times 10^8)=10 times 10^6`
=`10^7 Hz=10MHz`
As the source is approaching the observer,
Observer frequency =`f+Delta f=5010 MHz`
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