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UPSC 2017: What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?
(a)To detect neutrinos
(b)To detect gravitational waves
(c)To detect the effectiveness of missile defence system
(d)To study the effect of solar flares on our communication systems
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Not attemptedCorrect Answer: (b) To detect gravitational waves
The evolved Laser Interferometer Space Antenna (eLISA) mission of the European Space Agency will place three spacecraft in a triangular laser-linked configuration to sense low-frequency gravitational waves in space; its sole purpose is gravitational-wave astronomy, so option (b) is correct while the other purposes are unrelated. ([vajiramandravi.com](https://vajiramandravi.com/upsc-exam/what-is-the-purpose-of-the-evolved-laser-interferometer-space-antenna-elisa-project/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2017 Science & Technology question?▼
The correct answer is option (b): To detect gravitational waves. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Space Technology & Astronomy question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2017, GS Paper 1, as Question 87. It falls under Science & Technology > Space Technology & Astronomy.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Space Technology & Astronomy?▼
UPSC has asked 69 questions from Space Technology & Astronomy (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.