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Find the diffference is the apparent frequencies (i) When the source approaches a stationary observer (ii) When observer is approaching the stationary source. Take b as relative velocity in each case and `upsilon` as the velocity of the waves. |
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Answer» (i) When source is approaching a stationary observer `v_(1)=(upsilon.v)/(upsilon-upsilon_(s))=(upsilonv)/(upsilon-b)` …(i) (ii) When observer is approaching th e stationary source, `v_(2)=((upsilon+upsilon_(L))v)/(upsilon)=((upsilon+b)v)/(upsilon` ...(ii) `v_(2)-v_(2)=(upsilonv)/(upsilon-b)-((upsilon+b)v)/(upsilon)` `=(upsilon^(2)v-(upsilon^(2)-b^(2))v)/((upsilon-b)upsilon)=((upsilon^(2)-upsilon^(*2)+b^(2))v)/(upsilon(upsilon-b))` `v_(1)-v_(2)=(vb^(2))/(upsilon(upsilon-b))` |
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