# Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 10 - Space Missions [Latest edition]

## Chapter 10: Space Missions

[Page 144]

### Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board Chapter 10 Space Missions [Page 144]

Q 1.1 | Page 144

Fill in the blank and explain the statement with reasoning:

If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will ......

Q 1.2 | Page 144

Fill in the blank and explain the statement with reasoning:

The initial velocity (during launching) of the Managalyaan, must be greater than ______ of the earth.

Q 2.1 | Page 144

State with reasons whether the sentence is  true or false.

If a spacecraft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than the escape velocity.

Q 2.2 | Page 144

State with reasons whether the sentence is  true or false .

The escape velocity on the moon is less than that on the earth.

Q 2.3 | Page 144

State with reasons whether the sentence is  true or false .

A satellite needs a specific velocity to revolve in a specific orbit.

Q 2.4 | Page 144

State with reasons whether the sentence is  true or false .

If the height of the orbit of a satellite increases, its velocity must also increase.

Q 3.1 | Page 144

What is meant by an artificial satellite? How are the satellites classified based on their functions?

Q 3.2 | Page 144

What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified?

Q 3.3 | Page 144

Why are geostationary satellites not useful for studies of polar regions?

Q 3.4 | Page 144

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

Q 3.5 | Page 144

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

Q 4 | Page 144

Complete the following table.

Q 5.1 | Page 144

Solve the problem.

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?

Q 5.2 | Page 144

Solve the problem.

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?

Q 5.3 | Page 144

Solve the problem.

If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, then what would be the height of a satellite taking  $2\sqrt{2} T$ seconds for one revolution?

## Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 10 - Space Missions

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Concepts covered in Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 10 Space Missions are Space Missions, Orbits of Artificial Satellites, Launching of Satellite, Space Missions Away from Earth, India’s Space Programmes: Chandrayaan – 1, India’s Space Programmes: Mangalyaan (Mars vehicle), India’s Space Programmes: Missions to Other Planets, India and Space Technology, Satellites, Types of Satellite, India’s Space Programmes: Chandrayaan – 2, Space Debris and Its Management.

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