Question

Calculate the wave length of a sound wave whose frequncy is 220hz abd speecd is 440

Answer 1

Answer:

2

Explanation:

velocity = wave length * frequency

440 = wave length * 220

440/220 = wave length

2= wave length

Answer 2

CORRECT QUESTION :-

Calculate the wavelength of sound wave whose Frequency is 220Hz and speed is 440 m/s

GIVEN :-

• Frequency is 220Hz
• Speed is 440 m/s

TO FIND :-

• Wavelength of sound wave

SOLUTION :-

Relation between wavelength , frequency and Speed of a sound wave is given by ,

$\large\rm\bold{\boxed{Speed\:=\:wavelength\times\:frequency}}$

υ = 220Hz = 220 s⁻¹

$\large\rm\bold{\boxed{1\:Hz\:=\:1\:s^-1}}$

c = 440 m/s

$\large\rm{\rightarrow{440\:=\:wavelength\times\:220}}$

$\large\rm{\rightarrow{wavelength\:=\:\frac{440}{220}}}$

$\large\rm{\rightarrow{wavelength\:=\:2\:m}}$

∴ The wavelength of the sound wave is 2 m

$\huge\rm{\underline{\underline{\green{Additional\:Info:-}}}}$

$\large\rm{\underline{\pink{Important\:Relations\:between\:units:}}}$

• 1 nanometre = 10⁻⁹ m (or) 10⁻⁷ cm
• 1 Angstrom (or) 1A° = 10⁻⁸ cm (or) 10⁻¹⁰ m
• 1 KHz = 1000Hz
• 1KHz = 0.001 mHz