# Answer on Astronomy | Astrophysics Question for Nayan Jyoti Das

Question #51110

1. a) Express the distance of the star Proxima Centauri from the star Sirius B and the planet

Earth in light years.

1. d) The average temperature of the interior of a sun-like star is of the order 10^8 K. Estimate

the mass of the star in terms of the solar mass if it has a radius of order 10^10 cm.

3. b) A supernova explosion takes place at the distance of 4 pc. If the absolute magnitude of

the supernova is −25, calculate its apparent magnitude. Will the supernova be brighter

than the Sun? Justify your answer.

Earth in light years.

1. d) The average temperature of the interior of a sun-like star is of the order 10^8 K. Estimate

the mass of the star in terms of the solar mass if it has a radius of order 10^10 cm.

3. b) A supernova explosion takes place at the distance of 4 pc. If the absolute magnitude of

the supernova is −25, calculate its apparent magnitude. Will the supernova be brighter

than the Sun? Justify your answer.

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