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Astronomy and Space Science


7. 

An artificial satellite can be tracked very precisely from the earth by using

Answer : C. Doppler effect

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8. 

Super Nova is

Answer : C. a dying star

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9. 

The force of attraction between planets was correctly given by

Answer : D. Kepler

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10. 

Which one of the following layers of the atmosphere is responsible for the reflection of radio waves?

Answer : C. Ionosphere

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11. 

According to kepler’s first law of planetary motion, planets move in

Answer : C. elliptical orbits

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12. 

The process responsible for the enormous energy in the sun is

Answer : B. nuclear fusion

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