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10 November, 22:23

Which of the following is true about radiation?

Question 35 options:

Radiation is always harmful to human health

Electromagnetic waves are measured in terms of their wavelength and color

Visible lights is the only electromagnetic energy from the Sun

Radiation is electromagnetic energy that is transmitted in the form of waves.

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Answers (1)
  1. 10 November, 23:46
    0
    Option (4)

    Explanation:

    The radiation are defined as the energy that is liberated from atoms in the form of electromagnetic waves or minute particles of matter. For example, the radiations that are emitted from the sun in the form of light.

    This radiations are mainly of 3 types. This includes-

    (a) Alpha Radiation - These are the short ranged particles and are very heavy. This radiations cannot penetrate the human skins but they can cause harmful diseases.

    (b) Beta Radiation - These are also the short-ranged particles but they lighter. This radiations can penetrate the human skin upto the depth where the new skins are created.

    (c) Gamma Radiation - These are highly dangerous and are penetrable to the human skin. This type of radiations are often used for the medical purposes.

    Thus, the correct answer is option (4).
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