Who discovered the laws of planetary orbits?

  • Galileo Galilei
  • Nicholas Copernicus
  • Johannes Kepler
  • None of them
  • Johannes Kepler

What do you mean by Sunspots?

  • visible irregular dark patches on the photosphere of the sun resulting from a localised fall in the temperature to about 4000K
  • desert areas on the sun
  • dark patches on the surface of the sun which are cooler areas
  • all of these
  • visible irregular dark patches on the photosphere of the sun resulting from a localised fall in the temperature to about 4000K

What do you mean by ‘Black Hole’ in our solar system?

  • Contracted star with an intense gravitational pull
  • Collapsing of low density
  • Holes occurring in heavenly bodies
  • None of these
  • Contracted star with an intense gravitational pull

His argument does not hold water. ( which best expresses the meaning of the “hold water” Idiom/Phrase? )

  • To influence

Through the reporter’s efforts, many unknown facts have come to light. ( which best expresses the meaning of the “come to light” Idiom/Phrase? )

  • Been revealed

You find a black sheep in every community. ( which best expresses the meaning of the “black sheep” Idiom/Phrase? )

  • person with bad reputation

His work seems to be a Penelope’s web. ( which best expresses the meaning of the “a Penelope’s web” Idiom/Phrase? )

  • Endless