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3 questions

2017 · Question 44 · Physics
The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of
Choose your answer(a)Observation and understanding of the Universe(b)Study of the solar and the lunar eclipses(c)Placing satellites in the orbit of the Earth(d)Origin and evolution of living organisms on the Earth
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2017 · Question 74 · Physics
Organic Light Emitting Diodes (OLEDs) are used to create digital display in many devices. What are the advantages of OLED displays over Liquid Crystal displays ? 1. OLED displays can be fabricated on flexible plastic substrates. 2. Roll-up displays embedded in clothing can be made using OLEDs. 3. Transparent displays are possible using OLEDs. Select the correct answer using the code given below :
Choose your answer(a)1 and 3 only(b)2 only(c)1, 2 and 3(d)None of the above statements is correct
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2017 · Question 87 · Physics
What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project ?
Choose your answer(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
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)