A. doppler effect
B. beat
C. interference
D. resonance
Correct Answer:
Option B – beat
Explanation
Beat, in physics, the pulsation caused by the combination of two waves of slightly different frequencies.
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![Water falls through a height of 50m. Determine the temperature rise at the bottom of the fall. [Neglect energy losses. Specific heat capacity of water = 4200Jkg-1 K-1, g = 10m/s²]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "Water falls through a height of 50m. Determine the temperature rise at the bottom of the fall. [Neglect energy losses. Specific heat capacity of water = 4200Jkg-1 K-1, g = 10m/s²]")
