The Concept of the Black Holes in Indian Astronomy

Description: Test your knowledge about the concept of black holes in Indian astronomy.
Number of Questions: 15
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In Indian mythology, what is the name of the black hole that is believed to be the center of the universe?

  1. Brahma

  2. Vishnu

  3. Shiva

  4. Kali


Correct Option: C
Explanation:

Shiva is often depicted as a black hole, representing the destructive and transformative aspects of the universe.

Which ancient Indian text mentions the concept of black holes?

  1. Rigveda

  2. Atharvaveda

  3. Yajurveda

  4. Samaveda


Correct Option: A
Explanation:

The Rigveda, the oldest of the four Vedas, contains references to black holes, describing them as 'dark regions' or 'voids'.

According to Indian mythology, what happens when a star collapses into a black hole?

  1. It becomes a new sun

  2. It is destroyed

  3. It becomes a new planet

  4. It becomes a new moon


Correct Option: B
Explanation:

In Indian mythology, the collapse of a star into a black hole is seen as a destructive process, resulting in the annihilation of the star.

What is the name of the black hole that is believed to be located at the center of the Milky Way galaxy?

  1. Sagittarius A*

  2. Cygnus X-1

  3. V404 Cygni

  4. GRO J1655-40


Correct Option: A
Explanation:

Sagittarius A* is the supermassive black hole at the center of our galaxy, the Milky Way.

Which Indian astronomer first proposed the idea of black holes?

  1. Aryabhata

  2. Bhaskara II

  3. Brahmagupta

  4. Varahamihira


Correct Option: D
Explanation:

Varahamihira, a 6th-century Indian astronomer, is credited with first proposing the idea of black holes, referring to them as 'dark stars'.

What is the event horizon of a black hole?

  1. The point of no return

  2. The center of the black hole

  3. The boundary of the black hole

  4. The edge of the black hole


Correct Option: C
Explanation:

The event horizon is the boundary of a black hole, beyond which nothing, not even light, can escape.

What is the singularity at the center of a black hole?

  1. A point of infinite density

  2. A point of infinite temperature

  3. A point of infinite curvature

  4. A point of infinite mass


Correct Option: A
Explanation:

The singularity at the center of a black hole is a point of infinite density, where the laws of physics break down.

What is the name of the process by which matter and energy are pulled towards a black hole?

  1. Accretion

  2. Evaporation

  3. Spaghettification

  4. Hawking radiation


Correct Option: A
Explanation:

Accretion is the process by which matter and energy are pulled towards a black hole, forming a disk of material around it.

What is the name of the radiation emitted by black holes?

  1. Synchrotron radiation

  2. Bremsstrahlung radiation

  3. Cyclotron radiation

  4. Hawking radiation


Correct Option: D
Explanation:

Hawking radiation is the radiation emitted by black holes, due to quantum effects near the event horizon.

Which Indian physicist made significant contributions to the study of black holes?

  1. C. V. Raman

  2. Homi J. Bhabha

  3. S. Chandrasekhar

  4. Vikram Sarabhai


Correct Option: C
Explanation:

S. Chandrasekhar, an Indian-American astrophysicist, made significant contributions to the study of black holes, including his work on the Chandrasekhar limit.

What is the name of the Indian space observatory that is designed to study black holes and other cosmic objects?

  1. AstroSat

  2. Chandrayaan-1

  3. Mangalyaan

  4. NISAR


Correct Option: A
Explanation:

AstroSat is an Indian space observatory launched in 2015, designed to study black holes, neutron stars, and other cosmic objects.

Which Indian scientist is known for his work on the black hole information paradox?

  1. Abhay Ashtekar

  2. Ashoke Sen

  3. Jayant Narlikar

  4. T. Padmanabhan


Correct Option: B
Explanation:

Ashoke Sen, an Indian theoretical physicist, is known for his work on the black hole information paradox, proposing a resolution to the paradox based on string theory.

What is the name of the Indian gravitational wave detector that is being built to study black holes and other gravitational phenomena?

  1. LIGO India

  2. VIRGO India

  3. Einstein Telescope India

  4. KAGRA India


Correct Option: A
Explanation:

LIGO India is a gravitational wave detector being built in India as part of the international LIGO collaboration, aimed at studying black holes and other gravitational phenomena.

Which Indian institution is known for its research on black holes and other astrophysical phenomena?

  1. Indian Institute of Astrophysics

  2. Tata Institute of Fundamental Research

  3. Jawaharlal Nehru Centre for Advanced Scientific Research

  4. Harish-Chandra Research Institute


Correct Option: B
Explanation:

The Tata Institute of Fundamental Research (TIFR) is known for its research on black holes and other astrophysical phenomena, with several scientists making significant contributions to the field.

What is the name of the Indian scientist who is known for his work on black hole thermodynamics?

  1. A. K. Raychaudhuri

  2. R. K. Sachs

  3. B. S. DeWitt

  4. C. Sivaram


Correct Option: A
Explanation:

A. K. Raychaudhuri, an Indian mathematician and physicist, is known for his work on black hole thermodynamics, including his derivation of the Raychaudhuri equation.

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