Tag: option d: astrophysics

Quizzes (20) Questions (9)

Questions Related to option d: astrophysics

Multiple choice evs option d: astrophysics moon the moon's path in the sky the moon

sky appears blue because of 

  1. Total Internal

  2. Scattering

  3. Refraction

  4. Total internal reflection
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sky appears blue because of Scattering.Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.


Therefore, B is correct option.

Multiple choice physics option d: astrophysics the big bang and the early development of the universe origin of universe evolution of the universe

The Hubble Deep Field is an image of the sky taken with a very along exposure, using the Hubble Space Telescope. Almost all of the $5000$ objects seen in that picture are?

  1. Starts that are in our own Galaxy.

  2. Dirt on the lens of the telescope.

  3. Galaxies

  4. Distant planets.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Hubble Deep Field image was a landmark observation that revealed thousands of distant galaxies in a tiny, seemingly empty patch of the sky, demonstrating the vast scale of the universe.

Multiple choice social science option d: astrophysics the big bang and the early development of the universe origin of universe evolution of the universe

The rough estimation of visible matter in the universe is:

  1. $70\%$
  2. $80\%$
  3. $90\%$
  4. $10\%$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dark matter can't be seen, but its presence has been revealed by observing universe. It has been estimated that more than $90\%$ of matter is invisible in universe. So, what is visible, is only $10\%$ of the universe.