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JEE Main 26-Aug-2021 Shift 1 Solved Paper

Section: Physics
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Question : 23 of 90
 
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A source and a detector move away from each other in absence of wind with a speed of 20m∕s with respect to the ground. If the detector detects a frequency of 1800‌Hz of the sound coming from the source, then the original frequency of sourceconsidering speed of sound in air 340m∕s will be ........ Hz.
[26 Aug 2021 Shift 1]
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