A Trivia Quiz On Black Hole!

Explanation
The science of black hole involves studying the gravitational field, as black holes are known for their extremely strong gravitational pull. Kepler's laws and the theory of relativity are also relevant to the understanding of black holes. However, the law of electrolysis is not related to the science of black hole, as it pertains to the study of chemical reactions involving the flow of electric current through a liquid or solution.

Explanation
The statement "It has no mass" is incorrect because black holes are formed from the collapse of massive stars, which means they have a significant amount of mass. Black holes have such strong gravitational pull that not even light can escape from them, making them appear "black."

Explanation
The most general black hole solution is called the Ker-Newman Metric.

Explanation
Black holes with mass satisfying the Ker-Newman inequality are called extremal black holes. The Ker-Newman inequality is a mathematical condition that relates the mass, charge, and angular momentum of a black hole. When a black hole's mass satisfies this inequality, it is considered extremal, meaning it has the maximum possible charge and angular momentum for a given mass. Extremal black holes are of interest in theoretical physics and provide insights into the properties and behavior of black holes.

Explanation
A spherical boundary of zero thickness in which photons move around black holes is called a Photon sphere.

Explanation
In 1974, the science of Hawking radiation was explained. This theory was proposed by physicist Stephen Hawking, who suggested that black holes are not completely black, but instead emit small amounts of radiation due to quantum effects near the event horizon. This groundbreaking idea challenged previous understandings of black holes and had significant implications for our understanding of the universe.

Explanation
Charles Bolton is credited with discovering the first strong candidate for a black hole.

Explanation
Isaac Newton did not discover candidates for the black hole. Although Newton made significant contributions to the field of physics and astronomy, his work predates the discovery and understanding of black holes. It was not until the 20th century that scientists like Charles Bolton, Louis Webster, and Paul Murdin made advancements in the study of black holes.

Explanation
X-rays are used to study black holes because they can penetrate through the gas and dust surrounding the black hole, allowing scientists to observe the high-energy processes happening near the event horizon. X-ray telescopes in space, such as NASA's Chandra X-ray Observatory, are able to detect and analyze the X-ray emissions from black holes, providing valuable insights into their properties and behavior. Gamma rays, beta rays, and alpha rays are not commonly used for studying black holes as they have different characteristics and interactions with matter.