universe & solar system section 2 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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universe & solar system section 13

Question : 11

Diamond Ring is a phenomenon observed

a) only along the peripheral regions of the totality trail.

b) only in the central regions of the totality trail.

c) at the end of a total solar eclipse.

d) at the start of a total solar eclipse.

Discuss »

Answer: (a)

Diamond Ring is the phenomenon that occurs along the peripheral regions of the totality tail.

As the last bits of sunlight pass through the valleys on the moon’s limb, and the faint corona around the sun is just becoming visible, it looks like a ring with glittering diamonds on it.

Question : 12 [UPPCS (Mains) 2016]

The ‘Black Hole’ theory was propounded by

a) S. Chandrashekhar

b) Hargovind Khurana

c) H.J. Bhabha

d) C.V. Raman

Discuss »

Answer: (a)

Question : 13

Consider the following statements regarding asteroids:

  1. Asteroids are rocky debris of varying sizes orbiting the Sun.
  2. Most of the asteroids are small but some have diameter as large as 1000 km.
  3. The orbit of asteroids lies between orbits of Jupiter and Saturn.
Which of the statements given above are correct?

a) 1 and 3 only

b) 1, 2 and 3

c) 2 and 3 only

d) 1 and 2 only

Discuss »

Answer: (d)

Asteroids are rocky debris of varying sizes orbiting the Sun. Most of the asteroids are small but some have diameters as large as 1000 km.

There are millions of asteroids, many thought to be the shattered remnants of planetesimals, bodies within the young Sun’s solar nebula that never grew large enough to become planets.

The large majority of known asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter, or are co-orbital with Jupiter. Asteroids vary greatly in size, from almost 1,000 km for the largest down to rocks just tens of metres across.

Question : 14

Beirut time is two hours ahead and Lima time is five hours behind GMT. The longitudes of Beirut and Lima are respectively:

a) 30° East and 75° West

b) 35° West and 70° East

c) 70° East and 35° West

d) 75° West and 30° East

Discuss »

Answer: (d)

Beirut is in the east of G..M.T. and Lima is five hours behind the G.M.T.

We know that 1° is equal to four minutes

i.e., 2 hours = 30° East and Beirut is 75° West of G.M.T.

Question : 15 [UPPCS (Pre) 1997]

The limit beyond which stars suffer internal collapse is called

a) Hoyle limit

b) Fowler limit

c) Eddington limit

d) Chandrashekhar limit

Discuss »

Answer: (d)

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