Question

Give the chapters formulas of sound

Answer 1

T=1/f
or
f=1/T
v=f
$\gamma$

Answer 2

Formulas of sound :

(i) Echo

Speed of echo = ( 2 × distance between surface and source ) / time

(ii) V = f λ

where V = velocity of wave ,

f = frequency of sound wave ,

λ = wavelength .

(iii) f = 1 / t

where f = frequency of wave ,

t = time period .

(iv) E = h nu

where h = Plank's constant

E = energy of wave .

(v) f = √T/ 2 l ( π r² d )

f = frequency of stretched string

l = length

d = density

r = radius

T= time period .

Note that this formula is for stretched string only.