Question

a tennis ball of mass
$6.0 \times 10 { - }^{2}$
kg moving with a velocity of 62 m calculate the wavelength

Answer 1

As we know that every moving body has a debroglie wavelength associated with it which is given as,

Lemda = h/mv

Here,
Lemda is wavelength
h is planks constant
M is mass
V is velocity

Substitute values of h, m, v to get wavelength.

Hope you get your answer.

Answer 2

Use de-broglie wave equation

It’s given by
λ = h / (mv)

Where
λ = wavelength of object
h = Planck’s constant
m = mass of object
v = speed of object

Wavelength = h / (mv)
= (6.626 × 10^-34 J s) / (6.0 × 10^-2 kg × 62 m/s)
= 1.78 × 10^-34 m

Wavelength of tennis ball is 1.78 × 10^-34 m