Radioisotopes and Radiation Quiz 2

Which of the following radioisotopes occurs naturally?

• Cobalt 60

• Iridium 192

• Radium 226

• Ceasium 137

In a conventional x-ray tube the target material is usually:

• Copper.

• Beryllium.

• Tungsten

• Aluminium

How many years will Caesium pass before it decays to source strength of 0.25 Curie?

• 30.

• 60.

• 90.

• 120.

What is the property of low energy radiation?

• Less subject to scatter.

• More subject to scatter.

• Can be focused using a glass lens.

• Produce increased inherent unsharpness.

How many neutrons are there in a helium nucleus?

• 1.

• 2.

• 3.

• 4.