Question

p.8.6 formative 2
electromagnetic waves with a short wavelength occur at a ____ frequency and are ____ energetic.
o low: less
o low: more
o high: more
o high: less

Explanation:

The relationship between wavelength ($\lambda$), frequency ($f$), and energy ($E$) of electromagnetic waves is given by $c = \lambda f$ (where $c$ is the speed of light) and $E=hf$ (where $h$ is Planck's constant). From $c = \lambda f$, when $\lambda$ is small (short wavelength), $f$ is large (high frequency). From $E = hf$, when $f$ is large (high frequency), $E$ is large (more energetic).

Answer:

C. high; more