Question

Which of the following stages where a massive star explodes and releases a lot of energy?
(A) Red Supergiant
(B) Blackhole
(C) Main Sequence
(D) Supernova

Answer 1

Hint : In order to answer this question, first we will write the correct option where a massive star explodes and releases a lot of energy. And then we will explain the correct term for the given question.

Complete Step By Step Answer:
Blackhole is the stage where a massive star explodes and releases a lot of energy.
Black holes can form when stars with very enormous masses collide. As matter swirls toward its event horizon, a black hole emits a massive amount of gravitational energy. This energy generates a $300,000{\text{ }}light\,years$ long jet of particles.
A black hole is an area of spacetime where gravity is so powerful that nothing can escape it, including particles and electromagnetic waves like light. 1st A sufficiently compact mass can bend spacetime to generate a black hole, according to general relativity theory. The event horizon is the point at which there is no way out. Although it has a huge impact on the fate and circumstances of an object passing through it, it has no locally detectable properties, according to general relativity. A black hole is similar to an ideal black body in that it does not reflect light. Furthermore, in curved spacetime, quantum field theory predicts that event horizons emit Hawking radiation, which has the same spectrum as a black body with a temperature that is inversely proportional to its mass. For black holes of stellar mass, this temperature is on the order of billionths of a kelvin, making direct observation nearly impossible.
When big stars collide at the conclusion of their lives, black holes of stellar mass develop. A black hole can continue to develop after it has formed by absorbing mass from its surroundings. Supermassive black holes with millions of solar masses may arise by absorbing other stars and merging with other black holes. The existence of supermassive black holes in the core of most galaxies is widely accepted.
Hence, the correct option is (B) Blackhole.

Note :
A black hole cannot be seen because strong gravity pulls all of the light into the middle of the black hole. Scientists, on the other hand, can see how the black hole's enormous gravity affects the stars and gas surrounding it. Stars can be studied to see if they are circling or travelling around a black hole.