Answer :
Becquerel did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks
What is radioactivity?
The phenomenon of radioactivity was discovered by the French scientist Henri Becquerel in 1896 when he placed photographic paper in a drawer with some radioactive rocks.
We have to note that Becquerel did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks hence the stetement is false.
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