Gravitational Wave Astronomy — MCQs

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1. Gravitational waves were first directly detected in which year?





2. The first direct detection of gravitational waves was announced by:





3. Who first predicted the existence of gravitational waves?





4. Gravitational waves are ripples in:





5. The Nobel Prize in Physics 2017 for gravitational waves was awarded to:





6. The main sources of detectable gravitational waves are:





7. LIGO consists of how many detectors?





8. The two LIGO detectors are located in:





9. Virgo, a gravitational wave detector, is located in:





10. The LISA mission is a planned gravitational wave detector in:





11. The interferometer arms of LIGO are how long?





12. Gravitational waves travel at the speed of:





13. Which astrophysical event produced the first observed gravitational wave GW150914?





14. The event GW170817 was associated with:





15. Gravitational wave astronomy opened a new era called:





16. The sensitivity of gravitational wave detectors depends on:





17. Which type of black holes are most commonly detected by LIGO?





18. What happens to space-time when gravitational waves pass through it?





19. Which other signal was detected alongside GW170817?





20. What type of interferometer is used in LIGO?





21. The strain measured by LIGO is of order:





22. The Einstein Telescope is a proposed:





23. The KAGRA detector is located in:





24. Which Indian project will join the global network of gravitational wave detectors?





25. Gravitational waves can test which aspect of physics?





26. Gravitational waves from inflation in the early universe are called:





27. Which black hole merger produced the heaviest final black hole observed so far?





28. The polarization of gravitational waves can be used to test:





29. The frequency band of LIGO sensitivity is approximately:





30. Which cosmic objects emit continuous gravitational waves?





31. Which detection method complements gravitational wave astronomy?





32. The main noise source in LIGO at low frequencies is:





33. The space-based LISA detector will primarily detect:





34. Which kind of astrophysical event could produce both gravitational waves and neutrinos?





35. Which effect limits ground-based detectors at high frequencies?





36. The global network of gravitational wave detectors improves:





37. What are tidal deformabilities measured in GW170817 used for?





38. Which observatory detected the electromagnetic counterpart of GW170817?





39. The gravitational wave signal from a binary inspiral is called:





40. Which type of waves are gravitational waves?





41. What happens to black holes after merging in terms of gravitational wave signal?





42. Which constant is crucial in calculating gravitational radiation?





43. Which wave property carries energy away from systems?





44. Which black hole merger detection challenged known mass ranges?





45. The time delay between gravitational waves and light from GW170817 was about:





46. Gravitational waves confirm that black holes are:





47. Which detector is proposed to be triangular in design with 10 km arms?





48. What is the unit of gravitational wave strain?





49. Which type of astronomy benefited most from GW170817?





50. Gravitational wave astronomy is expected to reveal:





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