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In a Summer camp organized by the city Police you are standing on a bridge over

ID: 2158616 • Letter: I

Question

In a Summer camp organized by the city Police you are standing on a bridge over a highway measuring the speed of the cars with a handheld Doppler radar. Complete the following statements.
If a car is approaching you, the speed of the reflected radar wave ... .
A: increases B: decreases C: remains the same

If a car is receding away from you, the wavelength of the reflected radar wave ... with respect to the original wavelength.
A: increases B: decreases C: remains the same

If a car is approaching you, the frequency of the reflected radar wave ... with respect to the original frequency.
A: increases B: decreases C: remains the same

Explanation / Answer

B: decreases C: remains the same B: decreases