Cardiac Pacemakers Once Used Plutonium-238 as a Power Source $\gamma$ Rays And

question 87

Multiple Choice

Cardiac pacemakers once used plutonium-238 as a power source.Plutonium-238 decays by the emission of $\gamma$ rays and $\alpha$ particles.This emission is not particularly harmful because

• A)(\(\gamma\)rays are not absorbed very strongly by biological tissue, and α particles do not penetrate beyond the container.)
• B)(\(\gamma\) rays and \(\alpha\) particles are the least dangerous form of radiation.)
• C)(\(\gamma\) rays and \(\alpha\) particles do not penetrate beyond the container.)
• D)(\(\gamma\) rays are absorbed by the container, and \(\alpha\) particles do not affect biological tissue.)
• E)(\(\beta\)- particles are the most harmful type of radiation, and 238Pu is not a \(\beta\)- emitter.)

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