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. What effect does the gravitational redshift have on light emitted from near a black hole? a) It shifts the light toward the blue end of the spectrum b) It shifts the light toward the red end of the spectrum c) It increases the intensity of the light d) It polarizes the light 2 / 30 2. What role do supernovae play in the universe? a) They create new galaxies b) They distribute heavy elements c) They form new stars d) They stabilize planetary orbits 3 / 30 3. What is spaghettification, a phenomenon experienced by objects falling into a black hole? a) Objects become denser as they approach the event horizon b) Objects experience extreme heat and radiation c) Objects are compressed into a singularity d) Objects stretch into thin, elongated shapes due to tidal forces 4 / 30 4. What significant concept was introduced in the research paper titled "The No-Hair Theorem in General Relativity" by Brandon Carter, published in 1971? a) The concept of black hole complementarity b) The existence of gravitational waves c) The idea that black holes can emit radiation d) The no-hair theorem, stating that black holes have only three observable properties: mass, charge, and angular momentum 5 / 30 5. What is the estimated mass of Sagittarius A*, the supermassive black hole at the center of the Milky Way? a) 10,000 solar masses b) 100,000 solar masses c) 1 million solar masses d) 4 million solar masses 6 / 30 6. What is an accretion disk, commonly seen around black holes? a) A disk-shaped cloud of gas and dust orbiting a black hole b) A region of intense magnetic fields near a black hole c) A zone of extreme radiation emitted by a black hole d) A sphere of dark matter surrounding a black hole 7 / 30 7. What aspect of the universe will the James Webb Space Telescope (JWST) primarily focus on studying? a) Dark matter and dark energy b) Exoplanets and habitability c) Active galactic nuclei and black holes d) The early universe and the formation of galaxies 8 / 30 8. What defines a supermassive black hole? a) A black hole with mass greater than 20 solar masses b) A black hole with mass between 20 and 100 solar masses c) A black hole with mass greater than 100,000 solar masses d) A black hole with mass greater than 1 million solar masses 9 / 30 9. Which astronomical event can sometimes be mistaken for a supernova due to its brightness? a) A comet b) A nova c) A planetary nebula d) An eclipse 10 / 30 10. What is the name of the galaxy hosting M87's Supermassive Black Hole? a) Milky Way b) Andromeda c) M87 d) Triangulum 11 / 30 11. Where are intermediate-mass black holes often hypothesized to exist? a) In the center of galaxies b) In globular clusters c) In the outer regions of galaxies d) In intergalactic space 12 / 30 12. When is the scheduled launch date for the James Webb Space Telescope (JWST) as of the latest update? a) 2022 b) 2023 c) 2024 d) 2025 13 / 30 13. Which method is used to estimate the mass of a stellar-mass black hole in a binary system? a) Measuring the orbital period and velocity of the companion star b) Observing the color of the black hole c) Measuring the intensity of gravitational waves d) Counting the number of planets in the system 14 / 30 14. Which space observatory has contributed to the search for intermediate-mass black holes through X-ray observations? a) Hubble Space Telescope b) Chandra X-ray Observatory c) James Webb Space Telescope d) Spitzer Space Telescope 15 / 30 15. What phenomenon occurs when a black hole absorbs a nearby star or gas cloud, causing a sudden increase in brightness observed from Earth? a) Stellar explosion b) Supernova c) Gamma-ray burst d) Tidal disruption event 16 / 30 16. What is at the center of a black hole? a) A neutron star b) A white dwarf c) A singularity d) Dark matter 17 / 30 17. 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 18 / 30 18. 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 19 / 30 19. What is the approximate Schwarzschild radius of a black hole with a mass equal to that of the Sun? a) 3 kilometers b) 30 kilometers c) 300 kilometers d) 3,000 kilometers 20 / 30 20. Can anything escape from within the event horizon of a black hole? a) Yes, with enough energy b) Yes, if it moves fast enough c) No, nothing can escape d) Yes, but only light 21 / 30 21. 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) 22 / 30 22. What is one advantage of studying black holes using X-ray emissions compared to other wavelengths? a) X-rays can penetrate interstellar dust more easily b) X-rays travel faster than other types of radiation c) X-rays are less affected by gravitational lensing d) X-rays provide higher resolution images 23 / 30 23. 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 24 / 30 24. What is the name of the mission launched by NASA to study X-ray emissions from black holes, neutron stars, and other high-energy phenomena? a) Hubble Space Telescope b) Chandra X-ray Observatory c) Fermi Gamma-ray Space Telescope d) Spitzer Space Telescope 25 / 30 25. What is one method through which supermassive black holes are believed to grow? a) By forming new stars b) By absorbing dark matter c) By merging with other black holes and accreting matter d) By fusing hydrogen atoms 26 / 30 26. Which observation would indicate the presence of an intermediate-mass black hole in a star cluster? a) High-energy gamma rays b) Rapid star formation c) High velocity of stars near the cluster's center d) Low-mass star ejections 27 / 30 27. What effect does the intense gravitational pull of a black hole have on nearby light? a) Light is repelled away from the black hole b) Light is attracted toward the black hole c) Light is accelerated to superluminal speeds d) Light is unaffected by the black hole's gravity 28 / 30 28. What was the key finding of the research paper titled "Observational Evidence of Black Hole Spin and its Measurement" by Ramesh Narayan and Jeffrey E. McClintock, published in 2013? a) Evidence for the existence of Hawking radiation b) Direct imaging of a black hole event horizon c) Measurement of the spin of a supermassive black hole using X-ray emissions d) Confirmation of the no-hair theorem for black hole spin 29 / 30 29. What theoretical concept suggests that black holes may be replaced by fuzzballs, eliminating the need for an event horizon? a) No-hair theorem b) Fuzzball theory c) Holographic principle d) Firewall paradox 30 / 30 30. What is the information paradox in the context of black holes? a) The inability to observe black holes directly b) The loss of information about matter that falls into a black hole c) The difficulty in measuring the mass of a black hole d) The absence of Hawking Radiation from certain black holes Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! 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