MCAT Question of the Day
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    Q:

    		 Radar can detect the velocity of an object by emitting brief pulses of radio waves and detecting the frequency that returns. The detected waves are Doppler shifted and should be:
    		 

    A

    		 a higher frequency if the object is moving toward the radar source.

    B

    		 a lower frequency if the object is moving toward the radar source.

    C

    		 a higher frequency if the object is small.

    D

    		 detectable only if there are no other objects in the vicinity.



    Electromagnetics |
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