A siren having a ring of 200 hole makes 132 rev... - JAMB Physics 2019 Question
A siren having a ring of 200 hole makes 132 rev/min. A jet of air is directed on the set of holes. Calculate the frequency and wavelength in air of the note produced (take v = 350m/s)
A
0.875m
B
0.625m
C
0.335m
D
0.125m
correct option: a
n = 200, S = 132 rev/min, v = 350m/s\(^2\)
f = ns
| = | 200 | × | 132 | rev
min |
× | 1min
60s |
= | 440Hz |
| λ | = | v
f |
= | 350
440 |
= | 0.875m |
λ = 0.875m
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