Question

Help A$AP please
A gamma ray might have a wavelength as long as an _____.

Select one:
a. atomic nucleus
b. apple core
c. atom
d. amoeba

Answer 1

The correct answer is
a. atomic nucleus 

In fact, very high-energy gamma rays can have wavelengths as short as $10^{-20} m$. For comparison, the size of the atomic nucleus is approximately $10^{-15} m$, therefore we can say that gamma rays might even have wavelengths shorter than the size of an atomic nucleus.