A light year is

Physical Geography Mcqs
BILAL KHATTAK2

A.A unit of time which the earth takes to go round the sun
B.The distance travelled by the light in one year
C.It is a year in which the gravitational pull is less than the normal value of ‘G’

A light year (symbol: ly) is the distance that light travels in empty space in one year. Since the speed of light is about 300,000 km per second (about 186,000 miles per second), then a light year is about 10 trillion kilometers (about 6 trillion miles).

Related Mcqs:

  1. A Light year is the
  2. Which of the following statements about light is incorrect?
  3. How do red and blue light differ?
  4. While finalizing the current year‘s accounts, the company realized that an error was made in the calculation of closing stock of the previous year. In the previous year, closing stock was valued more by 50,000. As a result?
  5. Infrared and visible satellite images might provide __________?
  6. The unit of measuring distances betweenthe stars is known as:
  7. Although the polar regions radiate away more heat energy than they receive by insulation in the course of a year, they are prevented from becoming progressively colder each year by the__________?
  8. Which of the following has a wavelength shorter than that of violet light?
  9. Which of the following conditions causes the formation of spring tides?
  10. He said, “Where shall I be this time next year!”

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