A sound source emits frequency of 180 Hz when moving towards a rigid wall with speed 5 m/s and an observer is moving away from wall with speed 5 m/s. Both source and observer moves on a straight line which is perpendicular to the wall. The number of beats per second heard by the observer will be [Speed of sound = 355 m/s]

QuestionBank Joint Entrance Exam - Main (JEE Main) 1 year ago

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Option 1 : 5 beats/s

Option 2 : 10 beats/s

Option 3 : 6 beats/s

Option 4 : 8 beats/s


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SidcicQP SidcicQP Tuteehub forum best answer Best Answer 1 year ago
10 beats/s


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