Which of the following is an example of a scientific law?

A law in science is a generalized rule to explain a body of observations in the form of a verbal or mathematical statement. Scientific laws (also known as natural laws) imply a cause and effect between the observed elements and must always apply under the same conditions.

The correct answer is Option A.

Explanation:

X-rays and gamma rays are the electromagnetic rays. Electromagnetic waves are defined as the waves which are composed of electrical and magnetic components.

From the image, X-rays have shorter wavelength than the gamma rays.

The relationship between energy and the wavelength of the rays is given by the equation:

where,

E = energy of the wave

h = planck's constant

c = speed of light

= wavelength of the wave

As, energy is inversely related to the wavelength of the ray, so when wavelength is short, the energy is more and more will be penetration power.

Therefore, X-rays carry more energy than the gamma rays. Hence, the correct answer is Option A.