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Which of the following is incorrect about black holes?
- a)They are formed when the massive stars collapse under their own gravity.
- b)Singularity lies at the core of the black holes and has infinite density.
- c)It appears to be bright yellow when observed from the space telescopes.
- d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.
Correct answer is option 'C'. Can you explain this answer?
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Which of the following is incorrect about black holes?a)They are form...
Option c is the correct answer.
- Option a is correct: The black hole is an object that is so dense that not even light can escape its surface. They are formed when stars much more massive than the Sun reach the end of their lives; and they collapse under their own gravity.
- Option b is correct: A black hole has two parts:
1) Singularity: At the core of a black hole is a singularity. It is a point that is infinitely dense, as all the remnant mass of the star is compressed into this point.
2) Event horizon: It is an imaginary surface surrounding the singularity, and the gravity of the object is such that once anything enters this surface, it is trapped forever. Not even light can escape the pull of the singularity once it crosses the event horizon.
- Option c is incorrect: A black hole is a place in space where gravity pulls so much that even light cannot get out. Because no light can get out, people can’t see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.
- Option d is correct: Albert Einstein's theory of general relativity predicted the existence of black holes. He stated that no matter what such an object "eats," black holes are characterized only by their mass, spin and electrical charge. In 2015, the first gravitational wave was detected that provided the proof. Gravitational waves are ‘ripples’ in space-time caused by some of the most violent and energetic processes in the Universe. They are formed when a star explodes in a supernova; when two big stars orbit each other; and when two black holes merge. He predicted the existence of gravitational waves in 1916 in his general theory of relativity.
- Knowledge Base: Albert Einstein’s General theory of relativity tries to explain how gravitational force acts instantaneously between massive stars and planets that are millions of miles away. As per this theory, space and time form a continuum, like a fabric, and every object in the universe distorts this fabric, like a large ball distorts a tight trampoline sheet. This distortion is gravity. It produces two effects.
- One, the fabric causes any other object in the vicinity to move towards the heavier object and this is why gravity causes an object to pull things towards it Two, it bends light in the process of attracting it which is recently captured by LIGO observatory.
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Which of the following is incorrect about black holes?a)They are form...
Black holes are fascinating celestial objects that have captured the interest and curiosity of scientists and astronomers for many years. They are known for their extremely strong gravitational pull, which is so powerful that not even light can escape from them. While black holes have been extensively studied, there are still some misconceptions about them.
Incorrect statement:
c) It appears to be bright yellow when observed from space telescopes.
Explanation:
Contrary to option 'C', black holes do not appear bright yellow when observed from space telescopes. In fact, black holes are called "black" because they do not emit or reflect any light. Their gravitational pull is so strong that it absorbs all the light that comes near them, making them invisible to traditional telescopes. This makes it impossible for us to directly observe black holes and see their true appearance.
Correct statements about black holes:
a) They are formed when massive stars collapse under their own gravity.
- Black holes are formed from the remnants of massive stars that have exhausted their nuclear fuel and undergo a supernova explosion. During the explosion, the outer layers of the star are ejected into space, while the core collapses under its own gravity, forming a black hole.
b) Singularity lies at the core of the black holes and has infinite density.
- Singularity is a point of infinite density and zero volume that lies at the core of a black hole. It is believed to be a region where the laws of physics as we currently understand them break down. The gravitational force at the singularity is so strong that it causes a distortion in the fabric of space-time.
d) The General Theory of Relativity of Albert Einstein predicted the existence of black holes.
- The General Theory of Relativity, proposed by Albert Einstein in 1915, predicted the existence of black holes. Einstein's equations showed that if a massive object collapses under its own gravity, it would create a region of space where gravity becomes so strong that nothing can escape from it, leading to the formation of a black hole.
In conclusion, the incorrect statement is option 'C', as black holes do not appear bright yellow when observed from space telescopes. Instead, they are called "black" because they do not emit or reflect any light, making them invisible to traditional telescopes.
Incorrect statement:
c) It appears to be bright yellow when observed from space telescopes.
Explanation:
Contrary to option 'C', black holes do not appear bright yellow when observed from space telescopes. In fact, black holes are called "black" because they do not emit or reflect any light. Their gravitational pull is so strong that it absorbs all the light that comes near them, making them invisible to traditional telescopes. This makes it impossible for us to directly observe black holes and see their true appearance.
Correct statements about black holes:
a) They are formed when massive stars collapse under their own gravity.
- Black holes are formed from the remnants of massive stars that have exhausted their nuclear fuel and undergo a supernova explosion. During the explosion, the outer layers of the star are ejected into space, while the core collapses under its own gravity, forming a black hole.
b) Singularity lies at the core of the black holes and has infinite density.
- Singularity is a point of infinite density and zero volume that lies at the core of a black hole. It is believed to be a region where the laws of physics as we currently understand them break down. The gravitational force at the singularity is so strong that it causes a distortion in the fabric of space-time.
d) The General Theory of Relativity of Albert Einstein predicted the existence of black holes.
- The General Theory of Relativity, proposed by Albert Einstein in 1915, predicted the existence of black holes. Einstein's equations showed that if a massive object collapses under its own gravity, it would create a region of space where gravity becomes so strong that nothing can escape from it, leading to the formation of a black hole.
In conclusion, the incorrect statement is option 'C', as black holes do not appear bright yellow when observed from space telescopes. Instead, they are called "black" because they do not emit or reflect any light, making them invisible to traditional telescopes.
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Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer?
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Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer?.
Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is incorrect about black holes?a)They are formed when the massive stars collapse under their own gravity.b)Singularity lies at the core of the black holes and has infinite density.c)It appears to be bright yellow when observed from the space telescopes.d)The General Theory of Relativity of Albert Einstein predicted the existence of black holes.Correct answer is option 'C'. Can you explain this answer?.
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