MCQ
The focus of a convex lens is a point where:
- ADiverging rays appear to come from
- BParallel rays diverge after passing through the lens
- CParallel rays converge after passing through the lens
- DRays reflect back
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Column $I$
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Column $II$
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$(A)$
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Carbon dioxide in air
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$(i)$
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Damage ozone layer
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$(B)$
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Sulphur dioxide in air
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$(ii)$
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Produces acid rain
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$(C)$
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Chlorofluorocarbons
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$(iii)$
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Prevents photosynthesis
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$(D)$
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Dust in air
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$(iv)$
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leads to gloabal warming
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