Latest RRB Aptitude Question SOLUTION: 15) Guitar strings often go dead- become less responsive and bright in tone after a few days of intense use. A researcher whose son is a guitarist hypothesized that dirt and oil, r

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(#M40026075) RRB question 2011 QUESTION Keep an EYE

15) Guitar strings often go dead- become less responsive and bright in tone after a few days of intense use. A researcher whose son is a guitarist hypothesized that dirt and oil, rather than changes in the material properties of string were responsible. Which of the following investigations is most likely to yield significant information that would help the researcher evaluate his hypothesis?
a) Determining whether a metal alloy is used to make their strings go dead faster than do folk guitarists.
b) Determining whether identical string lengths of the same guage, go dead at different rates when strung on various brands of guitars.
c) Determining whether a dead string and a new string produce different qualities of sound.
d) Determining whether smearing various substances on new guitar strings causes them to go dead.

Asked In RRB MAN (11 years ago)

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