1. Two sounds are played at the same time. One comes from a440Hz tuning fork and

Question

1. Two sounds are played at the same time. One comes from a440Hz tuning fork and the other one from a guitar. A beat of2.5Hz can be heard. Which of the following is a correctstatement about he guitar:

a.       The guitar is playing442.5 Hz

b.      The guitar is playing 437.5Hz

c.       If one tightens thestring and hears a less frequent beat then the guitar was playing437.5 Hz

d.      If one loosens the stringand hears a less frequent beat then the guitar was playing 437.5hz.

e.      None of these is correct

2. Two speakers are d apart and both play identical toneswith a wavelength=d/2.5 . If you walk along a circlesurrounding the speakers with radius much longer than d, how manytimes will you hear nothing?

Explanation / Answer

(1). Answer is  option ( a ) and ( b ) , ( d )

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