Which of the following materials can block radiation?

Lead

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Steel

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Concrete

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All of the above

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Solution

The correct option is D All of the above
The energy that is released as the atoms become stable is known as radiation. There are three types of radiation: alpha particles, beta particles, and gamma rays. Beta particles can be blocked by a sheet of aluminum, but gamma rays require several inches of lead, concrete or steel to be stopped.

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