A long string is constructed by joining the ends of two shorter strings. The tension in the strings is the same but string II has 4 times the linear mass density of string I. When a sinusoidal wave passes from string I to string II:
a)the wavelength increases by a factor of 2
b) the frequency decreases by a factor of 2
c)the wavelength decreases by a factor of 4
d)the wavelength decreases by a factor of 2
e) the frequency decreases by a factor o
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