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
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1 / 30

1. 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

2 / 30

2. What prediction of general relativity has been confirmed by the observation of black hole mergers?

a) The existence of dark energy

b) The bending of light

c) The emission of gravitational waves

d) The expansion of the universe

3 / 30

3. What international space agency is collaborating with NASA on the James Webb Space Telescope (JWST) mission?

a) European Space Agency (ESA)

b) Russian Space Agency (Roscosmos)

c) China National Space Administration (CNSA)

d) Indian Space Research Organisation (ISRO)

4 / 30

4. How do astronomers detect supermassive black holes in distant galaxies?

a) By observing visible light emissions

b) By tracking the motion of stars and gas clouds near the galaxy center

c) By detecting gamma-ray bursts

d) By measuring cosmic microwave background radiation

5 / 30

5. What is the primary wavelength range that the James Webb Space Telescope (JWST) is designed to observe?

a) X-ray

b) Ultraviolet

c) Infrared

d) Gamma-ray

6 / 30

6. 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

7 / 30

7. What was the first direct evidence of the existence of M87's Supermassive Black Hole?

a) X-ray emissions from its accretion disk

b) Detection of gravitational waves

c) Observation of stars orbiting rapidly near its center

d) Imaging its event horizon using the Event Horizon Telescope

8 / 30

8. What was the main finding of the recent study using the NICER mission data regarding the spinning of black holes?

a) Confirmation of the no-hair theorem for black hole spin

b) Discovery of irregularities in the spin rates of black holes

c) Determination of the maximum possible spin rate for black holes

d) Evidence for the existence of rapidly spinning black holes

9 / 30

9. 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

10 / 30

10. 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

11 / 30

11. What is gravitational time dilation, a phenomenon predicted by general relativity?

a) The acceleration of time near massive objects

b) The constant speed of light

c) The slowing down of time near massive objects

d) The bending of light near massive objects

12 / 30

12. What is a white dwarf primarily composed of?

a) Hydrogen and helium

b) Iron and nickel

c) Carbon and oxygen

d) Silicon and sulfur

13 / 30

13. Why are primordial black holes considered a potential candidate for dark matter?

a) They emit large amounts of light

b) They are difficult to detect directly

c) They have high temperatures

d) They are found in large numbers in galaxies

14 / 30

14. Which phenomenon is often observed near supermassive black holes due to their intense gravitational fields?

a) Supernova explosions

b) Gravitational lensing

c) Pulsar emissions

d) Stellar formation

15 / 30

15. Which theoretical concept suggests that small primordial black holes might have evaporated by now due to Hawking radiation?

a) General Relativity

b) Quantum Field Theory

c) Hawking Radiation Theory

d) String Theory

16 / 30

16. Which observation supports the idea that black holes can form from the collapse of massive stars, as predicted by general relativity?

a) The detection of neutrinos

b) The redshift of distant galaxies

c) The observation of supernova remnants

d) The discovery of exoplanets

17 / 30

17. 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

18 / 30

18. 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

19 / 30

19. What is gravitational lensing, a phenomenon commonly observed near black holes?

a) The distortion of space and time by gravity

b) The emission of gravitational waves

c) The bending of light around massive objects

d) The stretching of matter into spaghetti-like shapes

20 / 30

20. 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

21 / 30

21. What is the name of the boundary around a black hole beyond which nothing can escape, as predicted by general relativity?

a) Event Horizon

b) Singularity

c) Photon Sphere

d) Accretion Disk

22 / 30

22. 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

23 / 30

23. What was the primary objective of the NICER mission launched by NASA in 2018?

a) Studying the atmosphere of Mars

b) Observing the outer planets of the solar system

c) Investigating the interiors of neutron stars

d) Mapping the magnetic fields of distant galaxies

24 / 30

24. Which famous supernova was observed in 1987 in the Large Magellanic Cloud?

a) SN 1054

b) SN 1572

c) SN 1604

d) SN 1987A

25 / 30

25. 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

26 / 30

26. What is the term used to describe the stretching and elongation of an object as it approaches the event horizon of a black hole?

a) Time dilation

b) Gravitational lensing

c) Black hole evaporation

d) Spaghettification

27 / 30

27. 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

28 / 30

28. What event marks the end of a star's Main Sequence phase?

a) Formation of a black hole

b) Collapse into a white dwarf

c) Exhaustion of hydrogen fuel in the core

d) Explosion as a supernova

29 / 30

29. 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

30 / 30

30. What recent discovery provided evidence for the existence of a population of "intermediate-mass" black holes in star clusters?

a) X-ray emissions from an ultraluminous X-ray source

b) Detection of gravitational waves from a black hole merger

c) Observation of hypervelocity stars escaping a galactic center

d) Imaging of a black hole shadow using the Event Horizon Telescope

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