Which one of the following is the time required for the Earth to return to a given point in its orbit with reference to fixed star, called? [NDA 2008]

Related MCQs

• 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]
• 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]
• The permanent tilt of the earth's axis and the revolution of the earth in its orbit together cause: 1. deflection of winds and ocean currents 2. differences in time between places on different meridians 3. varying length of day and night at different times of the year 4. changes in the altitude of the mid-day sun at different times of the year
• Which of the following statements is/are correct with regard to Milky Way? 1. It is a spiral galaxy. 2. The solar system resides in one of its spiral arms. Select the correct answer using the codes given below [NDA 2008]
• If there are four places on the same meridian 500km apart and the local time at one place is 12.00 noon, what will be the time at the three other places? [NDA 2008]
• The position of the earth in its orbit, when it is at its greatest distance from the Sun causing summer in the Northern hemisphere is :
• Consider the following statements: 1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface. 2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface. Which of the statements given above is/are correct? [IAS 2008]
• Who among the following was first to measure the circumference of the Earth? [NDA 2008]
• The point in the orbit of a moon that is farthest from the Earth and at which the moon's velocity is at a minimum, the known as:
• The earth revolves round the sun in its orbit by approximately: