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Question

Why can gamma rays travel through the air for a long distance?

A

They have very high kinetic energy.

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B

They have a smaller rate of collision with the atoms (or molecules) of the medium.

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C

They possess more mass than an alpha particle.

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D

They have less ionizing power but more penetrating power.

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Solution

The correct options are
A

They have very high kinetic energy.


B

They have a smaller rate of collision with the atoms (or molecules) of the medium.


D

They have less ionizing power but more penetrating power.


Because γrays are the highest energetic rays, so they have a smaller rate of collision with the atoms (or molecules) of the medium through which they pass. Thus, they have less ionizing power but more penetrating power.


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