Answer:
4.78 x 10^-17 m
Step-by-step explanation:
E = 26 GeV
First convert GeV into J
1 GeV = 1.6 x 10^-10 J
E = 26 x 1.6 x 10^-10 = 41.6 x 10^-10 J
Use the formula for energy
E = h c / λ
Where, h is the Plank's constant and λ be the wavelength and c be the velocity of light.
λ = h c / E
λ = ( 6.63 x 10^-34 x 3 x 10^8) / (41.6 x 10^-10)
λ = 4.78 x 10^-17 m