A standing wave is set up in a 2.0 m string that is fixed at both ends. The string vibrates at a frequency of 120 Hz wit

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A standing wave is set up in a 2.0 m string that is fixed at
both ends. The string vibrates at a frequency of 120 Hz with the
pattern shown (5th harmonic with a 5-loop pattern). If the tension
on the string is increased by a factor of 4, what is the harmonic
number (number of loops) of the resulting standing wave
pattern?
A) 3 B) 10 C) 15 D) 20 E) No standing wave pattern
occurs
why answer is E , explain please ,thank you..