Home
Class 11
PHYSICS
Light year is :...

Light year is :

A

light emitted by the sun in one year.

B

The time taken by light to travel from sun to earth.

C

The distance travelled by light in free space in one year.

D

The time taken by earth to go once around the sun.

Text Solution

Verified by Experts

The correct Answer is:
C
Light year is the distance travelled by light in free space in one year.
Promotional Banner

Topper's Solved these Questions

  • UNITS AND MEASUREMENTS

    NCERT FINGERTIPS|Exercise Measurement Of Mass|9 Videos

  • UNITS AND MEASUREMENTS

    NCERT FINGERTIPS|Exercise Accuracy, Precision Of Instruments And Errors In Measurements|14 Videos

  • UNITS AND MEASUREMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • THERMODYNAMICS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A light year is the distance that light can travel in one year. 1 light year =9,460,000,000,000 km. a. Express one light year in scientific notation. b. The average distance between Earth and Sun is 1.496xx10^(8) km. Is the distance between Earth and the Sun greater than, less than or equal to one light year?

Express light year in terms of metres.

Find the value of one light year in giga meter.

Express 1 light year in terms of metre. What is its order of magnitude?

Which of the following is not a unit of distance? (i) Light year (ii) Parsec (iii) Leap year (iv) angstrom

NCERT FINGERTIPS-UNITS AND MEASUREMENTS-Measurement Of Length
  1. Which of the following is smallest unit?

    Text Solution

    |

  2. Match the column I with Column II. .

    Text Solution

    |

  3. Which one of the following intruments is not used for the measurement ...

    Text Solution

    |

  4. A new unit of length is chosen such that the speed of light in vecuum ...

    Text Solution

    |

  5. Light year is :

    Text Solution

    |

  6. Light year is a unit of

    Text Solution

    |

  7. How many light years alpha centauri away from the earth?

    Text Solution

    |

  8. Which one of the following methods is used to measure distance of a pl...

    Text Solution

    |

  9. Laser beams are used to measure long distances because

    Text Solution

    |

  10. The distnace of the moon from the earth is about 60 times the radius o...

    Text Solution

    |

  11. The sun's angular diameter is measured to be 1920''. The distance of t...

    Text Solution

    |

  12. Calculate the length of the arc of a circle of radius 31.0 cm which su...

    Text Solution

    |

  13. The order of magnitude of the diameter of the earth is (diamtere of th...

    Text Solution

    |

  14. How many wavelength of Kr^(86) are there is one metre

    Text Solution

    |

  15. The ratio of molar volume to atomic volume for 1 mole of hydrogen is (...

    Text Solution

    |

  16. If the size of bacteria is 1 micron, what will be the number of it in ...

    Text Solution

    |

  17. One astronomical unit (AU) is equal to

    Text Solution

    |

  18. What is the ratio of volume of atom of the volume of nucleus?

    Text Solution

    |

  19. The ratio of one micron to one nanometre is

    Text Solution

    |

  20. Which of the following conversions is incorrect?

    Text Solution

    |