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MHT CET202019 Oct 2020Morning ShiftMathematicsDifferential EquationsActual

The bacteria increases at the rate proportional to the number of bacteria present. If the original number ' N ^ doubles in 4 hours then the number of bacteria in 12 hours will be

Options

  1. A3 ~N
  2. B4 ~N
  3. C6 ~N
  4. D8 ~N

Correct answer

B. 4 ~N

Step-by-step solution

(B) Number of bacteria at the beginning =N . The number doubles in every 4 hrs . Number of bacteria after 4 hrs =2 ~N , after 8 hrs =4 ~N , after 12 hrs =8 ~N

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