MCQ
Where is a spy satellite deployed $?$
- ✓Low - earth orbit
- BGeostationary orbit
- CPolar orbit
- DBoth $(A)$ and $(B)$
A spy-satellite is an earth observation satellite (or) communication satellite deployed in a low - earth orbit, for military (or) intelligence applications.
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Substance
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Bulb
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Substance at Cathode
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Substance at Anode
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$P$
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Lights up
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Aluminium
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Oxygen
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$Q$
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Lights up
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Nothing
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Nothing
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$R$
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Does not light up
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Nothing
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Nothing
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$S$
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Lights up
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Hydrogen
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Carbon dioxide
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