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Where does the signal in your cell phone...

Where does the signal in your cell phone come from?

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CHETANA PUBLICATION-SPACE MISSIONS-Exercise
  1. Answer the following in one sentence: What is an artifical satellite...

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  2. How many natural satellites does the earth have?

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  3. Where does the signal in your cell phone come from?

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  4. Where from do mobile towers receive the signals?

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  5. Where does the signal to your TV set come from?

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  6. You have seen photographs showing the position of monsoon clouds over ...

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  7. The broadcast signals that originate from a radio station are sent to ...

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  8. What is the range from the Earth's surface ,where an artificial satell...

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  9. An artificial satellite is at a height of 35780 km .from the earth's s...

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  10. Satellites need a specific velocity to revolve in specific orbits. Jus...

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  11. Explain the terms: escape velocity

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  12. Derive the formula for critical velocity (V).

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  13. What is meant by the orbit of a satellite ? On what basis and how ar...

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  14. Why is it beneficial to use satellite launch vehicles made of more tha...

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  15. What is meant by satellite launch vehicle? Explain a satellite launc...

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  16. Launching of a rocket' is based on newton's law of motion

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  17. is known as Pioneer of Indian space program

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  18. Find the odd man out: Moon, Sputnik, INSAT, Mars

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  19. Complete the analogy: 2000 km to 35780 km: M.E.O : : 180 km to 2000...

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  20. State whether the following statements are 'True or False'. Correct th...

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