Consider the following statements: 1. A geostationary satellite is at an approximate height of 10000 km. 2. FM transmission of music is of very good quality because the atmospheric or man-made noises which are generally frequency variations can do little

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Q: 97 (IAS/2005)
Consider the following statements:
1. A geostationary satellite is at an approximate height of 10000 km.
2. FM transmission of music is of very good quality because the atmospheric or man-made noises which are generally frequency variations can do little harm.
Which of the statements is/are correct?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,32,35,10,32,9,16

keywords: 

{'frequency variations': [0, 0, 1, 0], 'geostationary satellite': [0, 0, 1, 1], 'fm transmission': [0, 0, 1, 0], 'music': [4, 0, 3, 3], 'noises': [0, 0, 1, 0]}

The correct answer is 2 only.

Statement 1 is incorrect. A geostationary satellite is actually placed at an approximate height of 35,786 km above the Earth`s equator. This altitude allows the satellite to orbit the Earth at the same rotational speed as the Earth itself, resulting in the satellite appearing stationary from the ground.

Statement 2 is correct. FM (Frequency Modulation) transmission of music is known for its good quality because it is less affected by atmospheric or man-made noises. FM modulation works by varying the frequency of the carrier signal, and frequency variations caused by noise are less disruptive to the audio signal compared to amplitude variations in AM (Amplitude Modulation) transmission. This results in better sound quality and less interference.