Answer:
D. The telescope detects high-energy electromagnetic waves.
Explanation:
First of all, let's define what X-rays are.
X-rays are electromagnetic waves at high frequency and short wavelength.
The wavelength of X-rays span between 0.01 and 10 nanometers. X-rays are the second-highest frequency electromagnetic waves, after gamma rays, which have higher frequency.
The energy of an electromagnetic wave is directly proportional to its frequency, according to the equation:
[tex]E=hf[/tex]
where:
h is the Planck constant
f is the frequency of the wave
Since X-rays are high-frequency electromagnetic waves, it means that they also are high-energy electromagnetic waves.
Therefore, the correct answer is
D. The telescope detects high-energy electromagnetic waves.
