Select the correct answer.
Light incident on a surface at an angle of 45° undergoes diffused reflection. At what angle will it reflect?
A.
only at angles less than 45°
B.
only at angles greater than 45°
C. only at 45°
at any angle between -90° and 90°
D.
E.
only at 0°
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When seismic waves hit a fault, the waves are reflected off the fault. seismograph can detect these reflected seismic waves. geologists then use these data to map the fault's length and depth

The correct option is this: the sound waves from the two trombones have slightly different frequencies.from the question given above, we are told that the loudness of the sounds were increasing and decreasing, this is because the frequencies of the two sounds are different. the means that the number of waves that pass a fixed point in a given amount of time differ for both sounds.