Q4 of 11 Page 144

Complete the following table.


IRNSS: Fix the location of any place on the earth’s surface in terms of it precise latitude and longitude : Navigational Satellite.


INSAT, GSAT : Weather study & predict: Weather satellite.


IRS: Study of forests, desert, oceans, polar ice on earth’s surface: Earth’s observation.




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What is meant by satellite launch vehicles? Explain a satellite launch vehicle developed by ISRO with the help of a schematic diagram.

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Why it is beneficial to use satellite launch vehicles made of more than one stage?

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Solve the following problems.

If mass of a planet is eight times the mass of the earth and its radius is twice the radius of the earth, what will be the escape velocity for that planet?

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Solve the following problems.

How much time a satellite in an orbit at height 35780 km above earth’s surface would take, if the mass of the earth would have been four times its original mass?