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Q79 (NDA-I/2013) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Astronomy and astrophysics Answer Verified

Sun emits energy in the form of electromagnetic radiation. The following help in the generation of solar energy. Arrange them in the right sequence beginning from the starting of the cycle : 1. Hydrogen is converted to helium at very high temperatures and pressures. 2. The energy finds its way to suns surface. 3. A vast quantity of energy is generated by nuclear fusion. Select the correct answer vising the code given below,

Result
Your answer: —  Â·  Correct: D
Explanation

The generation of solar energy follows a specific sequence starting in the Sun's core. First, hydrogen nuclei (protons) collide under extreme temperatures (approximately 15 million degrees Celsius) and pressures to fuse into helium [2]. This nuclear fusion process converts mass into a vast quantity of energy, primarily in the form of gamma-ray photons, positrons, and neutrinos [1]. Finally, this generated energy must travel from the core through the radiative and convective zones to reach the Sun's surface, or photosphere [3]. In the radiative zone, energy moves via photon diffusion, while in the convective zone, thermal columns carry hot material upward [3]. Once the energy reaches the surface, it is emitted into space as electromagnetic radiation, including visible light and ultraviolet rays. Therefore, the correct sequence is the conversion of hydrogen to helium (1), followed by the generation of energy (3), and finally its transport to the surface (2).

Sources

  1. [1] https://solarscience.msfc.nasa.gov/interior.shtml
  2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 17: Climate Change > Incoming EnergY > p. 255
  3. [3] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 14: Climate > lnsolation > p. 131
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