Showing posts with label ASTROLOGY QUIZ. Show all posts
Showing posts with label ASTROLOGY QUIZ. Show all posts

Friday, January 27, 2012

The dark lines in the solar spectrum are due to

  •      absorption of corresponding wavelengths by the outer layers of the sun
  •      destructive interference between waves of certain definite wavelengths
  •      absorption of corresponding wavelengths by the prism used in the photograph
  •      absence of corresponding wavelengths from the light emitted by the core of the sun

Wednesday, August 24, 2011

In a black hole________?

    *  All wavelengths of light are absorbed
    *  All wavelengths of light are absorbed except green and blue
    *  All wavelengths of light are absorbed except blue and red


Monday, August 22, 2011

Light from the nearest star reaches the earth in

    *  4.3 seconds
    *  4.3 minutes
    *  43 minutes
    *  4.3 years


Radiocarbon is produced in the atmosphere as a result of

    *   collision between fast neutrons and nitrogen nuclei present in the atmosphere
    *   action of ultraviolet light from the sun on atmospheric oxygen
    *  action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
    *   lightning discharge in atmosphere