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Grade 8IIT JEE Entrance Exam

The Frequesy of a wave is 100Hz and its wavelength is 50m. Its velocity is

Profile image of Praveen Dansena
9 Years agoGrade 8
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1 Answer

Profile image of Raghav Rao
9 Years ago
V=fλ  f=100Hz , λ=50m.
V=100*50 =5000 m/s.
[ we get this equation by the following way:-
V=dx/dt 
At t=T(time period) , x=λ .
So v=λ/T 
1/T=f
So, v=fλ ]