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The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then | |
A. | 3/4th of it will disintegrate in two months. [Wrong Answer] |
B. | it will completely disintegrate in two months. [Correct Answer] |
C. | it will completely disintegrate in four months. [Wrong Answer] |
D. | l/8th of it will remain intact at the end of four months. [Wrong Answer] |