Home» Online Test » Astronomy » Black Hole Online Test 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This 'Black Hole Online Test' covers questions across all the topics related to the Black Holes. Get New Questions in Each Attempt Total Questions: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: Yes Do not refresh the page! 👍 All the best! 1 / 30 1. According to Einstein's theory of general relativity, what causes the curvature of spacetime? a) The motion of planets b) The presence of magnetic fields c) The mass and energy of objects d) The speed of light 2 / 30 2. What is the name of the radio source associated with Sagittarius A*, the supermassive black hole at the center of the Milky Way? a) Cygnus X-1 b) V404 Cygni c) Cassiopeia A d) Sagittarius A* 3 / 30 3. What defines the Chandrasekhar limit? a) The maximum mass of a neutron star b) The maximum mass of a stable white dwarf c) The minimum mass required to form a black hole d) The minimum mass required for nuclear fusion 4 / 30 4. What is the typical end state of a star with a mass greater than 20 solar masses after it exhausts its nuclear fuel? a) White dwarf b) Neutron star c) Stellar-mass black hole d) Red giant 5 / 30 5. Which research paper, published in 2016, described the discovery of the gravitational waves from a binary black hole merger, providing direct evidence for the existence of gravitational waves predicted by Einstein's theory of general relativity? a) "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole" b) "Measurement of Gravitational Waves from a Binary Black Hole Merger" c) "The Information Paradox" d) "Particle Creation by Black Holes" 6 / 30 6. What is the name of the supermassive black hole at the center of the Milky Way galaxy? a) Andromeda b) Sagittarius A* c) Cygnus X-1 d) M87* 7 / 30 7. What is the fate of a star much more massive than the Sun after it exhausts its nuclear fuel? a) It becomes a red giant b) It forms a white dwarf c) It collapses into a black hole d) It turns into a brown dwarf 8 / 30 8. What was the key finding of the research paper titled "Measurement of Gravitational Waves from a Binary Black Hole Merger" by the LIGO Scientific Collaboration and Virgo Collaboration, published in 2016? a) Detection of gravitational waves from a neutron star merger b) Confirmation of the existence of intermediate-mass black holes c) Observation of the merger of two stellar-mass black holes d) Measurement of the spin rate of a supermassive black hole 9 / 30 9. What is Hawking Radiation? a) Light emitted from the event horizon b) Thermal radiation predicted to be released by black holes c) Sound waves detected from black holes d) The shadow cast by a black hole 10 / 30 10. What is the relationship between the mass of a supermassive black hole and the velocity dispersion of stars in its host galaxy's bulge? a) Directly proportional b) Inversely proportional c) No relationship d) Random correlation 11 / 30 11. Which of the following is a property that black holes can possess? a) Mass b) Charge c) Angular Momentum d) All of the above 12 / 30 12. How does a red giant form? a) By the fusion of hydrogen in the outer layers b) By the collapse of a neutron star c) By the expansion of a star after exhausting core hydrogen d) By the merger of two white dwarfs 13 / 30 13. What is the mass of M87's Supermassive Black Hole, as estimated from the 2019 EHT image? a) 1 million solar masses b) 10 million solar masses c) 100 million solar masses d) 1 billion solar masses 14 / 30 14. What is a supernova? a) The explosion of a star b) The collapse of a galaxy c) The formation of a planet d) The birth of a star 15 / 30 15. Which type of black hole is formed from the remnants of a single massive star? a) Stellar-mass black hole b) Intermediate-mass black hole c) Supermassive black hole d) Primordial black hole 16 / 30 16. What role does gravitational lensing play in astronomy? a) It distorts the appearance of distant galaxies b) It allows for the direct observation of black holes c) It causes stars to collapse into black holes d) It prevents the formation of planetary systems 17 / 30 17. Which process leads to the formation of heavier elements during a star's life cycle? a) Nuclear fusion b) Nuclear fission c) Radioactive decay d) Gravitational collapse 18 / 30 18. What was the name of the mission launched in 2018 by NASA to study the most extreme objects in the universe, including black holes and neutron stars? a) Kepler Space Telescope b) Spitzer Space Telescope c) Fermi Gamma-ray Space Telescope d) NICER (Neutron star Interior Composition Explorer) 19 / 30 19. What is the name of the black hole system that produced the first-ever observed gravitational waves, detected in 2015? a) Cygnus X-1 b) V404 Cygni c) GW170817 d) GW150914 20 / 30 20. How does the rate of Hawking Radiation emission change as a black hole's mass decreases? a) The rate decreases b) The rate increases c) The rate remains constant d) The rate fluctuates 21 / 30 21. Which theory of physics is primarily used to describe black holes? a) Quantum Mechanics b) General Relativity c) Classical Mechanics d) Thermodynamics 22 / 30 22. How is the size of a black hole’s event horizon measured? a) By its radius b) By its volume c) By its circumference d) By its mass 23 / 30 23. What phenomenon occurs when an object gets stretched by a black hole’s tidal forces? a) Time Dilation b) Spaghettification c) Cosmic Inflation d) Redshift 24 / 30 24. What is the no-hair theorem in the context of black holes? a) The theorem stating that black holes have no gravitational effect on nearby objects b) The theorem asserting that black holes have no distinguishing features other than mass, charge, and angular momentum c) The theorem proving that black holes cannot evaporate d) The theorem demonstrating that black holes cannot merge with other black holes 25 / 30 25. What effect does Hawking Radiation have on the temperature of a black hole? a) It decreases the temperature b) It increases the temperature c) It has no effect on the temperature d) It fluctuates the temperature 26 / 30 26. What is the significance of studying black holes using multiple wavelengths, including X-rays, radio waves, and visible light? a) It allows for the direct observation of black holes b) It provides a comprehensive view of black hole environments and processes c) It enables the detection of gravitational waves from black hole mergers d) It helps measure the mass of black holes accurately 27 / 30 27. What size range can primordial black holes have? a) Between 1 and 10 solar masses b) Between 10 and 100 solar masses c) Between 100 and 1,000 solar masses d) From microscopic to several thousand solar masses 28 / 30 28. What is the approximate mass of the supermassive black hole in the galaxy M87, as observed by the Event Horizon Telescope? a) 1 million solar masses b) 6.5 million solar masses c) 6.5 billion solar masses d) 100 million solar masses 29 / 30 29. What unit is commonly used to express the mass of black holes? a) Solar masses b) Earth masses c) Jupiter masses d) Neutron star masses 30 / 30 30. What is the Schwarzschild radius of a black hole? a) The radius of the accretion disk b) The radius of the event horizon c) The distance from the black hole where light cannot escape d) The radius of the black hole's singularity Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. 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