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Which of the following holds a correct relation between pressure, temperature and altitude?

Which of the following holds a correct relation between pressure, temperature and altitude? Correct Answer Pressure decreases, temperature decreases, altitude increases

As the pressure decreases there will be a temperature decreases during an increase in altitude. This is based on ideal gas equation PV=nRT where, P=pressure of gas (Units=N/m2) V=volume of gas (Units=m3) ρ=density of gas (Units=Kg/m3) R=universal gas constant (Units=Nm/kg-K) T=temperature of gas (Units=K).

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If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to
i) altitude bubble on index frame
ii) altitude bubble on index frame if it is to be used as a level
iii) altitude bubble on telescope
iv) altitude bubble on telescope if it is to be used as a level
The correct answer is
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