In the arrangement shown, a mass can be hung from a string with a linear mass density of \( 2 \t...

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In the arrangement shown, a mass can be hung from a string with a linear mass density of \( 2 \times 10^{-3} \mathrm{~kg} \mathrm{~m}^{-1} \), that passes over a light pulley. The string is connected to a vibrator of frequency \( 700 \mathrm{~Hz} \) and the length of the string between the vibrator and the pulley is \( 1 \mathrm{~m} \).
If the standing waves are observed, the largest mass to be hung is
(a) \( 32 \mathrm{~kg} \)
(b) \( 25 \mathrm{~kg} \)
(c) \( 16 \mathrm{~kg} \)
(d) \( 400 \mathrm{~kg} \)
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