Question

$\left(i\right)$ Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals.
$\left(ii\right)$ State an additional use of the waves mentioned in part $\left(i\right)$.

Answer 1

$\left(i\right)$ X-rays

$\left(ii\right)$ X-rays are used for detection of fracture in bones, teeth etc.