Home
Class 8
PHYSICS
Choose the correct alternative : A sta...

Choose the correct alternative :
A star in our galaxy exploded about 7500 years ago . The light emitted in the explosion took 6500 years to reach the earth and the star is

A

2.25 x 10^12 km

B

7500 light years

C

1.95 x 10^12 km

D

6500 light years

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • FORCE AND PRESSURE

    TARGET PUBLICATION|Exercise EXERCISE|139 Videos

  • MEASUREMENT AND EFFECTS OF HEAT

    TARGET PUBLICATION|Exercise EXERCISE|121 Videos

Similar Questions

Explore conceptually related problems

Choose the correct alternative and write its alphabet against the sub question number: The….man evolved about 50 thousand years ago.

Choose the correct alternative and write its alphabet against the sub question number: About 10 thousand years ago, ……..started to practise agriculture.

By choosing appropriate words given in the bracket, complete the paragraph: (cultural, agriculture, fire, brain, cro-magnon, homo sapiens, neanderthal) Evolution of upright man continued in the direction of developing its……. For the period of about 1 lakh years and meanwhile discovered the ..........Brain of man, 50 thousand years ago had been sufficiently evolved to the extent that it could be considered as member of the species ........Neanderthal man can be considered as the first example of wise-man. The ........man evolved about 50 thousand years ago afterwards, this evolution had been faster than the earlier. About 10 thousand years ago, wise man started to practice the .............It started to rear the cattle-herds and established the cities...........development took place later.

Given below are the steps in the life cycle of a massive star . Using the information about life cycle of stars , arrange the steps in the correct order of their occurrence : a red giant forms when the stars hydrogen level drops if it is a massive star , a neutron star is formed . if it is super massive star , a black hole is formed a main sequence star that can live for millions or even billions of years gets formed gravity pulls hydrogen gas together to form a cloud a supernova occurs nuclear fusion occurs causing the star to glow .

TARGET PUBLICATION-LIFE CYCLE OF STARS-EXERCISE
  1. Choose the correct alternative : When a star undergoes expansion ,

    Text Solution

    |

  2. Choose the correct alternative : Sirius A is known as the brightest ...

    Text Solution

    |

  3. Choose the correct alternative : A star in our galaxy exploded about...

    Text Solution

    |

  4. Name the following : The type of energy which when generated inside ...

    Text Solution

    |

  5. Name the following : The element acting as a fuel in energy generati...

    Text Solution

    |

  6. Name the following : The element which constitute 26% of the mass of...

    Text Solution

    |

  7. Name the following : The star closest to the sun .

    Text Solution

    |

  8. Name the following : The property present in sun in absence of which...

    Text Solution

    |

  9. Right or wrong . If wrong , write the correct sentence : The empty s...

    Text Solution

    |

  10. Right or wrong . If wrong , write the correct sentence : The sizes o...

    Text Solution

    |

  11. Right or wrong . If wrong , write the correct sentence : Light year ...

    Text Solution

    |

  12. Right or wrong . If wrong , write the correct sentence : More than o...

    Text Solution

    |

  13. Right or wrong . If wrong , write the correct sentence : End stage o...

    Text Solution

    |

  14. Right or wrong . If wrong , write the correct sentence : When stars ...

    Text Solution

    |

  15. Right or wrong . If wrong , write the correct sentence : The sun wil...

    Text Solution

    |

  16. Right or wrong . If wrong , write the correct sentence : When the su...

    Text Solution

    |

  17. Right or wrong . If wrong , write the correct sentence : The sun wil...

    Text Solution

    |

  18. Right or wrong . If wrong , write the correct sentence : A star ends...

    Text Solution

    |

  19. Right or wrong . If wrong , write the correct sentence : Only light ...

    Text Solution

    |

  20. Complete the analogy : Radius of sun : 695700 km :: mass of sun : ……...

    Text Solution

    |