Black Hole Online Test

Created by

Vikash chaudhary

This 'Black Hole Online Test' covers questions across all the topics related to the Black Holes.

Get fresh, 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 phenomenon occurs when light from distant objects is bent by the gravitational field of a black hole, allowing astronomers to measure the black hole's mass indirectly?

a) Gravitational lensing

b) Doppler effect

c) Redshift

d) Time dilation

2 / 30

2. Which of the following is a property that black holes can possess?

a) Mass

b) Charge

c) Angular Momentum

d) All of the above

3 / 30

3. What did Stephen Hawking propose as a solution to the information paradox?

a) Black holes have no event horizons

b) Information is encoded on the event horizon

c) Information leaks out of black holes over time

d) Information is irretrievably lost in black holes

4 / 30

4. What groundbreaking discovery was announced by astronomers in 2020 regarding the black hole at the center of the Milky Way?

a) Evidence of a supermassive black hole merger

b) Detection of gravitational waves from Sagittarius A*

c) Identification of a new class of intermediate-mass black holes

d) Confirmation of the existence of a disk of gas orbiting Sagittarius A*

5 / 30

5. 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

6 / 30

6. What is one potential method for detecting intermediate-mass black holes?

a) Observing their direct emissions

b) Detecting gravitational waves from their mergers

c) Measuring the cosmic microwave background

d) Observing star formation rates

7 / 30

7. 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

8 / 30

8. What evidence do astronomers use to detect stellar-mass black holes in binary systems?

a) Direct imaging of the black hole

b) Gravitational lensing

c) X-ray emissions from the accretion disk

d) Pulsar timing

9 / 30

9. Which concept describes the warping of space and time by gravity in Einstein's theory?

a) Quantum entanglement

b) Special relativity

c) Spacetime curvature

d) Gravitational lensing

10 / 30

10. Why are primordial black holes an important area of research in cosmology?

a) They are the main source of cosmic rays

b) They may offer explanations for the nature of dark matter

c) They are the most common type of black hole

d) They directly influence the orbits of planets

11 / 30

11. What instrument was used by astronomers to make the discovery of the disk of gas around Sagittarius A* in 2020?

a) Hubble Space Telescope

b) Chandra X-ray Observatory

c) Atacama Large Millimeter/submillimeter Array (ALMA)

d) Very Large Telescope (VLT)

12 / 30

12. What is a black hole?

a) A region of space with extremely high density

b) A star that has exploded

c) A planet with a massive gravitational field

d) A galaxy that emits no light

13 / 30

13. What did astronomers observe in 2019 that provided evidence for a second population of black holes in the Milky Way?

a) Gamma-ray bursts from black hole mergers

b) X-ray emissions from a new black hole binary system

c) Gravitational waves from a black hole-neutron star merger

d) Fast radio bursts from a magnetar near the galactic center

14 / 30

14. 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

15 / 30

15. What happens to the matter in the accretion disk of a stellar-mass black hole?

a) It is ejected as solar wind

b) It forms new stars

c) It spirals into the black hole, emitting radiation

d) It stabilizes into a planetary system

16 / 30

16. What mass range defines an intermediate-mass black hole?

a) 10 to 100 solar masses

b) 100 to 10,000 solar masses

c) 1,000 to 100,000 solar masses

d) 10,000 to 1 million solar masses

17 / 30

17. What type of star is formed after a supernova explosion if the core remnant is between 1.4 and 3 solar masses?

a) White Dwarf

b) Neutron Star

c) Red Giant

d) Black Hole

18 / 30

18. What observational method might help detect primordial black holes?

a) Direct imaging in visible light

b) Detection of gravitational waves from their mergers

c) Observation of gamma-ray bursts

d) Measurement of cosmic microwave background radiation

19 / 30

19. 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

20 / 30

20. Which effect can be observed just outside the event horizon of a black hole?

a) Gravitational redshift

b) Cosmic microwave background

c) Galactic rotation curves

d) Doppler effect

21 / 30

21. What is the current status of Hawking Radiation and black hole evaporation in theoretical physics?

a) It has been proven experimentally

b) It remains a theoretical prediction

c) It has been disproven by observational evidence

d) It is considered irrelevant to modern physics

22 / 30

22. What role do supermassive black holes play in galaxy evolution?

a) They trigger star formation

b) They regulate the growth of galaxies through feedback mechanisms

c) They destabilize galactic structures

d) They repel interstellar matter

23 / 30

23. What is the concept known as where an object falling into a black hole appears to an outside observer to become frozen in time and redshifted to infinity?

a) Time dilation

b) Gravitational lensing

c) Black hole evaporation

d) Spaghettification

24 / 30

24. 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

25 / 30

25. What remnant can be left behind after a Type II supernova?

a) White dwarf

b) Neutron star or black hole

c) Red giant

d) Brown dwarf

26 / 30

26. What is the primary mechanism behind Hawking Radiation?

a) Quantum tunneling of particles near the event horizon

b) Nuclear fusion within the black hole's core

c) Magnetic reconnection in the accretion disk

d) Gravitational lensing of nearby stars

27 / 30

27. Which research paper, published in 2019, described the discovery of the first-ever intermediate-mass black hole candidate in the Milky Way galaxy?

a) "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole"

b) "Observation of Gravitational Waves from a Binary Black Hole Merger"

c) "Discovery of an Intermediate-mass Black Hole Candidate in the Galactic Center Region"

d) "Measurement of Gravitational Waves from a Binary Neutron Star Merger"

28 / 30

28. According to Hawking's theory, how does Hawking Radiation lead to the eventual evaporation of black holes?

a) By accelerating the growth of the black hole

b) By causing the black hole to shrink over time

c) By preventing the accretion of new matter

d) By increasing the temperature of the black hole

29 / 30

29. What type of object can produce detectable gravitational waves when it collides with a black hole?

a) Neutron star

b) White dwarf

c) Red giant

d) Exoplanet

30 / 30

30. What was the first black hole to be discovered and confirmed through observational evidence?

a) Cygnus X-1

b) M87's Supermassive Black Hole

c) Sagittarius A*

d) V404 Cygni

Please provide accurate information so we can send your Achievement Certificate by mail.

NameEmailPhone Number

Your score is

Please provide your feedback.

Thank you for your valuable feedback.

Buy Black Hole MCQ PDF for Offline Study

This 'Black Hole Online Test' covers questions across all the topics related to the Black Holes.

Please provide accurate information so we can send your Achievement Certificate by mail.

Related MCQs