the temperature of Sun’s centre is 15 millions °C and the t3emperature of outer surface of sun is _____.

1. 1. 4500 to 5000°C
   2. 5000 to 5500°C
   3. 5000 to 5000°C
   4. 5500 to 6000°C

The time required by moonlight to reach the earth is _____.

1. 1. 1 Sec
   2. 1.3 Sec
   3. 2 sec
   4. 2.3 sec

The term ‘meteor’ is applied to an interplanetary body _____.

1. 1. After it enters the earth’s atmosphere and lands on the surface of the earth without exploding in mid-air
   2. Before it enters the earth’s atmosphere
   3. After it enters the earth’s atmosphere and explodes in midair as a ball of fire
   4. After it enters the atmosphere of the earth

Twelve constellations referred to as zodiac, are _____.

1. 1. A group of stars
   2. Signs of Roman gods
   3. Imaginary region that encompass the path of the planets
   4. None of these

The altitudes of heavenly besides appear to be greater than they actually ae. This is due to _____.

1. 1. Motions of the earth
   2. These are visible because of light of the sun reflected from their surface
   3. Vertical motion of these heavenly bodies
   4. Atmospheric refraction

Super Nova is _____.

1. 1. A dying star
   2. An asteroid
   3. A comet
   4. A black hole

The period of one revolution of sun around the Centre of galaxy is called _____.

1. 1. Astronomical year
   2. Light year
   3. Cosmic year
   4. Parsec

The Milky way extends through a distance of _____.

1. 1. 10⁵ light years
   2. 1 light year
   3. 8 light years
   4. 10¹⁰ light years

The light coming from stars gives the idea of their _____.

1. 1. Mass
   2. Temperature
   3. Size
   4. Rotation

The sunspots cause _____.

1. 1. Polar auroras
   2. Magnetic storms on the surface of the sun
   3. Aurora borealis and aurora australis
   4. All of these