In air, what is the approximate range of beta particles?

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Multiple Choice

In air, what is the approximate range of beta particles?

Explanation:
Beta particles (electrons) lose energy quickly as they pass through air because they ionize air molecules. This energy loss limits how far they can travel before stopping. The distance they cover in air depends on their energy, but for typical beta emissions, a practical, common range is on the order of a few meters. About ten feet in air (roughly three meters) is a convenient, representative estimate for many beta sources, which is why this option is chosen. The other distances are either too short for most beta energies (an inch), or too long to be a reasonable general range (hundreds of feet), while one meter can underestimate the travel for higher-energy betas.

Beta particles (electrons) lose energy quickly as they pass through air because they ionize air molecules. This energy loss limits how far they can travel before stopping. The distance they cover in air depends on their energy, but for typical beta emissions, a practical, common range is on the order of a few meters. About ten feet in air (roughly three meters) is a convenient, representative estimate for many beta sources, which is why this option is chosen. The other distances are either too short for most beta energies (an inch), or too long to be a reasonable general range (hundreds of feet), while one meter can underestimate the travel for higher-energy betas.

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