Question

The energy of an alpha particle is 6.8 into 10 raise to power minus 18 joule what will be the wavelength associated with it

Answer 1

Given conditions ⇒
Energy of the Alpha Particles (E) = 6.8 × 10⁻¹⁸ J.

According to the Question, We need to find the Wavelength.
∴ Using the Formula,
 E = hc/λ
where, λ = wavelength, h = Plank Constant = 6.63 × 10⁻³⁴ J-s., c = speed of the light in air = 3 × 10⁸ m/s.

∴ λ = hc/E
 = (6.63 × 10⁻³⁴ × 3 × 10⁸) ÷ (6.8 × 10⁻¹⁸)
 = 2.925 × 10⁻⁸ m

Hence, the wavelength is 2.925 × 10⁻⁸ m.


Hope it helps.