Question

If a speaker produce 400 vibration in 4 second . Calculate frequency & time period

Answer 1

Answer:

400 vib. in . 4 second.

Step-by-step explanation:

Time period (T)=3×10−10s(T)=3×10-10s

Frequency (v)=1T=13×10−10s=3.33×109s−1(v)=1T=13×10-10s=3.33×109s-1

v=3.3×109s−1v=3.3×109s-1

Wavelength (λ)=cv=3×108ms−13.3×109s−1(λ)=cv=3×108ms-13.3×109s-1

=λ=9×10−2m=λ=9×10-2m

Wave number (v¯)=1λ(v¯)=1λ

v¯=19×10−2mv¯=19×10-2m

v¯=11.11m−1