The mean radius of the earth is approximately:

Related MCQs

• Consider the following statements: 1. Earth is the fourth largest planet of the solar system 2. Earth's circumference is about 45000 km 3. Earth's polar diameter is about 43 km shorter than its equatorial diameter 4. Earth has a total surface area of 510 million sq.km Which of these statements are correct? [NDA 2002]
• Consider the following statements regarding the atmosphere of the earth: 1. It is enveloping the earth because of gravity. 2. Its density decreases with increasing height from the surface of the earth. 3. Its characteristic composition is same throughout its height. 4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere. Which of these statements are correct? [CDS 2001]
• Owing to the equatorial bulge and the polar flattening, the polar radius of the earth falls short of the equatorial radius by about: [NDA 1991]
• Variation in duration of day and night is due to: 1. rotation of earth on its axis 2. revolution of earth around the sun 3. inclination of earth at an angle of
• Days and nights are caused by : 1. rotation of the earth on its axis 2. revolution of the earth around the sun 3. inclination of the earth's axis
• Of the total water on the Earth, fresh water reserve a constitute approximately
• The age of the Earth is approximately
• The earth revolves round the sun in its orbit by approximately:
• The approximate radius or the Earth is
• Which of the following absorbs the insolation from the sun and preserves the earth's radiated heat, thus acting like a blanket allowing the earth neither to become too cold nor too hot?