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Choose the correct alternative :- The formula -GMm`(1//r_2 1//r_1)` is `more//less` accurate than the formula `mq(r_2- r_1)` for the difference of potential energy between two points `r_2 and r_1`, distance away from the centre of the earth.

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  9. Does the escape speed of a body from the earth depend on:- the mass of...

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  10. Does the escape speed of a body from the earth depend on:- the directi...

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  11. Does the escape speed of a body from the earth depend on:- the height ...

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  14. A comet orbits the sun in a highly elliptical orbit. Does the comet ha...

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  15. A comet orbits the sun in a highly elliptical orbit. Does the comet ha...

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  16. A comet orbits the sun in a highly elliptical orbit. Does the comet ha...

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  17. A comet orbits the sun in a highly elliptical orbit. Does the comet ha...

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  18. Which of the following symptoms is likely to afflict an astronaut in s...

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