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Byju's Answer
Standard XII
Physics
Wave Speed expression
A wave comple...
Question
A wave completes 20 vibrations in 2.5 s. Its frequency is
A
20 Hz
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B
8 Hz
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C
200 Hz
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D
50 Hz
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Solution
The correct option is
B
8 Hz
time period of wave
T
=
2.5
20
s
e
c
so frequency is
f
=
8
Hz
so answer is B.
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