Civil Services Prep

Prelims 2017 · Science and Technology · Question 37

What is the purpose of 'evolved Laser Interferometer Space Antenna (eLISA)' project?

  1. To detect neutrinos
  2. To detect gravitational waves
  3. To detect the effectiveness of missile defence system
  4. To study the effect of solar flares on our communication systems

Answer

To detect gravitational waves

  • (a) To detect neutrinos — Incorrect. Neutrinos are detected by observatories like IceCube or Super-Kamiokande, not by eLISA.
  • (b) To detect gravitational waves — Correct. eLISA is a planned space-based laser interferometer mission designed to detect gravitational waves.
  • (c) To detect the effectiveness of missile defence system — Incorrect. eLISA is an astrophysics mission, not a defence-testing platform.
  • (d) To study the effect of solar flares on our communication systems — Incorrect. That is related to space weather studies, not the objective of eLISA.
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