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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Answer the following question in detail. State any four applications of a communication satellite.

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प्रश्न

Answer the following question in detail.

State any four applications of a communication satellite.

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उत्तर

Applications of communication satellite:

  1. For the transmission of television and radio wave signals over large areas of Earth’s surface.
  2. For broadcasting telecommunication.
  3. For military purposes.
  4. For navigation surveillance.
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पाठ 5: Gravitation - Exercises [पृष्ठ ९८]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
पाठ 5 Gravitation
Exercises | Q 3. (ii) | पृष्ठ ९८

संबंधित प्रश्‍न

Suppose there existed a planet that went around the sun twice as fast as the earth.What would be its orbital size as compared to that of the earth?


A spacecraft consumes more fuel in going from the earth to the moon than it takes for a return trip. Comment on this statement.


Two satellites A and B move round the earth in the same orbit. The mass of B is twice the mass of A.


At what rate should the earth rotate so that the apparent g at the equator becomes zero? What will be the length of the day in this situation?


(a) Find the radius of the circular orbit of a satellite moving with an angular speed equal to the angular speed of earth's rotation. (b) If the satellite is directly above the North Pole at some instant, find the time it takes to come over the equatorial plane. Mass of the earth = 6 × 1024 kg.


What is the true weight of an object in a geostationary satellite that weighed exactly 10.0 N at the north pole?


Answer the following question.

Define the binding energy of a satellite.


Answer the following question.

Why is a minimum two-stage rocket necessary for launching of a satellite?


Derive an expression for the critical velocity of a satellite.


Answer the following question in detail.

What is a critical velocity?


Answer the following question in detail.

Obtain an expression for the critical velocity of an orbiting satellite. On what factors does it depend?


Two satellites of a planet have periods of 32 days and 256 days. If the radius of the orbit of the former is R, the orbital radius of the Latter is ______


Two satellites A and B go round a planet P in circular orbits having radii 4R and R respectively. If the speed of the satellite A is 3v, the speed of satellite B is ____________.


Two satellites of masses m1 and m2 (m1 > m2) are revolving round the earth in circular orbit of radii r1 and r2 (r1 > r2) respectively. Which of the following statements is true regarding their speeds v1 and v2?


A geostationary satellite is orbiting the earth at the height of 6R above the surface of earth. R being radius of earth. The time period of another satellite at a height of 2.5 R from the surface of earth is ____________.


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The ratio of energy required to raise a satellite to a height `(2R)/3` above earth's surface to that required to put it into the orbit at the same height is ______.

R = radius of the earth


In the case of earth, mean radius is 'R', acceleration due to gravity on the surface is 'g', angular speed about its own axis is 'ω'. What will be the radius of the orbit of a geostationary satellite?


A geostationary satellite is orbiting the earth at a height 6R above the surface of the earth, where R is the radius of the earth. This time period of another satellite at a height (2.5 R) from the surface of the earth is ______.


The period of revolution of a satellite is ______.


A satellite is revolving in a circular orbit at a height 'h' above the surface of the earth of radius 'R'. The speed of the satellite in its orbit is one-fourth the escape velocity from the surface of the earth. The relation between 'h' and 'R' is ______.


A satellite revolves around a planet very close to its surface. By what maximum factor can its kinetic energy be increased suddenly, such that it revolves in orbit in the same way?


A satellite is revolving around a planet in a circular orbit close to its surface and ρ is the mean density and R is the radius of the planet, then the period of ______.

(G = universal constant of gravitation)


What is the typical altitude range for a polar satellite's orbit?


Which of the following is the only natural satellite of the Earth?


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