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MHT CET202121 Sep 2021Evening ShiftMathematicsDifferential EquationsActual

If the half life period of a substance is 5 years, then the total amount of the substance left after 15 years, when initial amount is 64 gms is

Options

  1. A8 gms
  2. B16 gms
  3. C2 gms
  4. D32 gms

Correct answer

A. 8 gms

Step-by-step solution

Half life period =5 years Initial quantity of substance =64 grams Quantity left after 5 years = 64 2 =32 grams Quantity left after 10 years = 32 2 =16 grams Quantity left after 15 years = 16 2 =8 grams

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