Our Universe

  1. Which of the following stars is also known as Pulsar ?
    1. Red Giant
    2. White Dwarf
    3. Neutron Star
    4. Massive Star
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    Neutron star is also known as Pulsar. A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star.

    Correct Option: C

    Neutron star is also known as Pulsar. A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star.

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  1. Which of the following stars is known as Fossil star ?
    1. Protostar
    2. Dog Star
    3. Red Giant
    4. White Dwarf
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    White Dwarf is known as Fossil star. They are supported by electron degeneracy pressure. It amplifies the contrast with red giants. They are both very hot and very small. They are the opposite of black holes. They are end-products of small, low-mass stars.

    Correct Option: D

    White Dwarf is known as Fossil star. They are supported by electron degeneracy pressure. It amplifies the contrast with red giants. They are both very hot and very small. They are the opposite of black holes. They are end-products of small, low-mass stars.

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  1. The last stage in the life cycle of a star is
    1. Black Hole
    2. Supernova
    3. Red Giant
    4. White Dwarf
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    The last stage in the life circle of a star is white dwarf. Small stars, like the Sun, will undergo a relatively peaceful and beautiful death that sees them pass through a planetary nebula phase to become a white dwarf.

    Correct Option: D

    The last stage in the life circle of a star is white dwarf. Small stars, like the Sun, will undergo a relatively peaceful and beautiful death that sees them pass through a planetary nebula phase to become a white dwarf.

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