Question

1. When you drive your car toward a state patrol car with a constant speed, the frequency of the radar
returning to the patrol car
a. continually increases as you get closer.
b. continually decreases as you get closer.
c. is constant and amplitude increases
d. Is constant and amplitude decreases​

Answer 1

b. continually decreases as you get closer .

Answer 2

Answer:

a. Continually increases as you get closer

Explanation:

Doppler's Effect: The frequency will increase when another object is coming towards it with a constant speed and will decrease when an object is going far away.

So, there is an apparent shift in the wave when the object is moving towards or away from the source of frequency.

Here, You are moving towards the state patrol car at a constant speed, so the frequency which is returning to the patrol car will continually increase as you will get closer.

Doppler's effect is a very interesting phenomenon. It is just a part of physics and we can experience in day to day basis, specially when driving.

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