MCQ
When two forces act in opposite directions, then net force acting two forces.
- ASum of two factors
- ✓Difference bwteen two factors
- CBoth of these
- DNone of these
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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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