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प्रश्न
An engine is moving on a c1rcular path of radius 200 m with speed of 15 m/s. What will be the frequency heard by an observer who is at rest at the centre of the circular path, when engine blows the whistle with frequency 250 Hz?
पर्याय
Greater than 250 Hz
250 Hz
zero
Less than 250 Hz
MCQ
उत्तर
250 Hz
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