Q. With reference to the Cosmic rays, which of the following statement(s) is/are correct?
1.They are high-energy particles, moving at nearly the speed of light, originate from the Sun, our galaxy, and distant galaxies.
2.When cosmic rays interact with the Earth’s atmosphere, it leads to the formation of ozone layer.
3.Gamma rays, X-rays, and ultraviolet light are the types of cosmic rays.
Select the correct answer using the codes given below:
Explanation –
Statement 1 is correct. Cosmic rays are high-energy particles, mostly protons and atomic nuclei, that travel through space at close to the speed of light. They originate from various sources, including the Sun, our galaxy (Milky Way), and even distant galaxies beyond.
Statements 2 and 3 are incorrect. Cosmic rays do not contribute to the formation of the ozone layer. Some studies suggest that cosmic rays may indirectly affect the atmosphere by influencing cloud formation, but the ozone layer is primarily shaped by chemical reactions involving oxygen, ultraviolet radiation, and pollutants like CFCs. While gamma rays, X-rays, and ultraviolet light are forms of electromagnetic radiation, they are not classified as cosmic rays. Cosmic rays consist primarily of high-energy particles like protons, electrons, and atomic nuclei.
Source: Forum IAS
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