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JEE Mains 26-July-2022 Shift 1 Solved Paper

Section: Physics
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Question : 54 of 90
 
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When a car is approaching the observer, the frequency of horn is 100‌Hz. After passing the observer, it is 50‌Hz. If the observer moves with the car, the frequency will be ‌
x
3
‌Hz where x= __________.
[26-Jul-2022-Shift-1]
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