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What principle is utilized by speed guns to measure the speed of moving objects?
- a)The Law of Reflection
- b)The Doppler Effect
- c)The Principle of Inertia
- d)The Law of Conservation of Energy
Correct answer is option 'B'. Can you explain this answer?
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What principle is utilized by speed guns to measure the speed of movin...
Speed guns operate based on the Doppler Effect, which describes the change in frequency of waves in relation to an observer moving relative to the source of the waves. When a speed gun emits radio waves, these waves reflect off a moving object. If the object is approaching the gun, the frequency of the reflected waves increases; if it is moving away, the frequency decreases. By analyzing this frequency shift, the speed of the object can be accurately calculated. An interesting fact is that the Doppler Effect is also used in medical imaging, such as Doppler ultrasound, to assess blood flow in vessels.
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What principle is utilized by speed guns to measure the speed of moving objects?a) The Law of Reflectionb) The Doppler Effectc) The Principle of Inertiad) The Law of Conservation of EnergyCorrect answer is option 'B'. Can you explain this answer?
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