A musician invents a one-stringed instrument as shown below. He makes two such instruments.
By turning the tuning key, he can tighten or loosen the string, which increases or decreases its frequency respectively. He uses the key to tune (match) the frequency of the string to 300 Hz and a simple device (depicted here) to check the frequency.
The green light on the device will light up if the difference between the frequency of the string and the desired frequency (300 Hz) is up to 2 Hz. For any frequency beyond that, either low or high, one of the red lights on the device will light up. One day the musician tunes both the one-stringed instruments using the device. What could be the maximum difference between the frequencies of the two strings on the instruments?
A. 0 Hz
B. 2 Hz
C. 4 Hz
D. (can't say with the data given)
Answers
Answer:
options c
and 1 small atvace
Explanation:
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