Question : Cobalt therapy is the medical use of rays from the radioisotope cobalt-60 to treat conditions such as cancer.
Option 1: alpha
Option 2: beta
Option 3: gamma
Option 4: Ultraviolet
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Correct Answer: gamma
Solution : The correct answer is gamma.
The medicinal application of gamma rays from the radioisotope cobalt-60 to treat diseases like cancer is known as cobalt treatment. Cobalt-60 was first widely used in external beam radiation (teletherapy) devices in the 1950s. These machines created a gamma-ray beam that was directed into the patient's body to destroy tumour tissue.
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Question : The maximum biological damage is produced by
Option 1: X-rays
Option 2: gamma-rays
Option 3: beta-rays
Option 4: alpha-rays
Question : Which of the following radiations has the least wavelength?
Option 2: α-rays
Option 3: γ-rays
Option 4: β-rays
Question : What does the 'ozone layer' absorb?
Option 1: Infrared rays
Option 2: Ultraviolet rays
Option 3: X - rays
Option 4: Gamma - rays
Question : Radioactive elements emit:
Option 1: Radio waves
Option 2: Infrared waves
Option 3: Ultraviolet waves
Option 4: α, β, and γ radiation
Question : The greenhouse effect is the heating up of the Earth's atmosphere which is due to:
Option 1: the ultraviolet rays
Option 2: γ-rays
Option 3: the infrared rays
Option 4: X-rays
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