Question

To distinguish between real gems and artificial gems a merchant may use which of the following radiation
(A) Infrared rays
(B) γ rays
(C) x- rays
(D) ultraviolet ray

Answer 1

Hint Let’s give you a small hint that through the real object the rays can be transferred but fake objects do not transfer from it.

Complete Step by step solution
So let us understand what is the difference between the real and artificial gemstones?
So a genuine gemstone is one that is originated from the earth through natural processes
So let’s take the example that is Diamond which is a naturally occurring substance.
But the artificial gemstone is grown in a laboratory under controlled conditions to get the same characteristics of the original. So let’s take an example that Chatham Emerald is grown in a laboratory under controlled pressure and temperature.
So to distinguish whether it’s real or artificial their x-ray machines will be able to tell if the stone has a radiolucent molecular structure or a radiopaque molecular structure. Diamonds are radiolucent while fake objects have more radiopaque features.
Radiolucent structural materials are transparent to x-rays but radiopaque molecular structures are not transparent to the x-rays.

Thus after seeing all the given explanations option C is correct.

Additional Information
All other tests to distinguish between the real gems and artificial gems are listed below as:
1. Water Test
2. Heat the Stone and See if it shatters
3. UV Light Test
4. Sparkle Test

Note
Being practical in this field is better and learning the features of the radiations is better. X-rays have velocity, wavelength, frequency and amplitude. When x-rays encounter matter, their characteristics are determined by the short wavelength of the radiation.