Physics
Which type of reaction produces the most harmful radiation ?

Fusion reaction
Fission reaction
Photo-Chemical reaction
Chemical reaction

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Physics
It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Work done in rolling a stone is less than in lifting it.
Work done in both is same but the rate of doing work is less in rolling.
Work done in lifting the stone is equal to rolling it.
Work done in rolling is more than in lifting.

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