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# A train blowing its whistle moves with a constant velocity u away from an observer on the ground. The ratio of the actual frequency of the whistle to that measured by the observer is found to be $1.2$. If the train is at rest and the observer moves away from it at the same velocity, then the ratio would be?

- $0.51$
- $1.25$
- $1.52$
- $2.05$

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Question Text | A train blowing its whistle moves with a constant velocity u away from an observer on the ground. The ratio of the actual frequency of the whistle to that measured by the observer is found to be $1.2$. If the train is at rest and the observer moves away from it at the same velocity, then the ratio would be? |

Updated On | Jul 8, 2021 |

Topic | Waves & Oscillation |

Subject | Physics |

Class | Class 12 |