State the property that determines the hardness of x-rays.
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Category: Modern Physics
Modern physics is a branch of physics that is mainly concerned with the theory of relativity and quantum mechanics.
Albert Einstein and Max Plank were the pioneers of modern of physics as the first scientists to introduce the theory of relativity and quantum mechanics, respectively.
In modern physics, energy and matter are not considered as separate entities. Rather, they are considered different forms of each other.
A body moving in a circle with constant speed is said to have an acceleration. Explain.