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
Correct Answer: B
Solution :
Exp. [b] The Laser Interferometer Space Antenna (LISA), is a proposed European Space Agency mission designed to detect and accurately measure gravitational waves ? tiny ripples in the fabric of space-time from astronomical sources. LISA would be the first dedicated space-based gravitational wave detector. It aims to measure gravitational waves directly by using laser interferometry The LISA concept has a constellation of three spacecraft, arranged in an equilateral triangle with sides 2.5 million km long, flying along an Earth-like heliocentric orbit. The distance between the satellites is precisely monitored to detect a passing gravitational wave.
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