Question

the rays used in food preservation and sterilizing the surgical instrument are
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Answer 1

Answer:

gamma rays

gamma rays,

radiation makes it useful for sterilizing medical supplies that cannot be sanitized by boiling or for killing organisms that cause food spoilage. 

Explanation:

hope you will understand

Answer 2

Gamma rays

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Radiation makes it useful for sterilizing medical supplies that cannot be sanitized by boiling or for killing organisms that cause food spoilage. More than 50 percent of the ionizing radiation to which humans are exposed comes from natural radon gas, which is an end product of the radioactive decay chain.