A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is -

Question

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of higher pitch when train departs

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the same in both cases in all respects

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of higher intensity when train arrives

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of higher pitch when train arrives

1.	A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is -
A.	the same in both cases in all respects
B.	of higher intensity when train arrives
C.	of higher pitch when train arrives
D.	of higher pitch when train departs
Answer» D. of higher pitch when train departs

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