Two trains move towards each other with the same speed. The speed of sound is 340 
. If the height ofthe tone of the whistle of one of them heard on the other changes to 9/8 times, then the speed of each train should be
A
20 
B
2 
C
200 
D
2000 
Text Solution
Verified by ExpertsThe correct answer is:
A
Here 
Source and observer are moving in opposite direction, apparent frequenc
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