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Half life of a radioactive material is 2 days. If the original material is 1 kg, then how much of it will be left after 6 days ?
- a)125 gms
- b)250 gms
- c)500 gms
- d)750 gms
Correct answer is option 'A'. Can you explain this answer?
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Half life of a radioactive material is 2 days. If the original materia...
Half-life is the time taken for half of the radioactive material to decay. In this case, the half-life of the material is 2 days, which means that after 2 days, half of the material will decay and half will remain.
To find out how much material will be left after 6 days, we can divide the total time (6 days) by the half-life (2 days) to determine the number of half-life periods that have passed.
Let's break down the calculation step-by-step:
Step 1: Determine the number of half-life periods that have passed
6 days ÷ 2 days/half-life = 3 half-life periods
Step 2: Calculate the remaining material after each half-life period
After the first half-life: 1 kg ÷ 2 = 0.5 kg
After the second half-life: 0.5 kg ÷ 2 = 0.25 kg
After the third half-life: 0.25 kg ÷ 2 = 0.125 kg
Therefore, after 6 days, there will be 0.125 kg (or 125 gms) of the radioactive material left.
So, the correct answer is option A) 125 gms.
To find out how much material will be left after 6 days, we can divide the total time (6 days) by the half-life (2 days) to determine the number of half-life periods that have passed.
Let's break down the calculation step-by-step:
Step 1: Determine the number of half-life periods that have passed
6 days ÷ 2 days/half-life = 3 half-life periods
Step 2: Calculate the remaining material after each half-life period
After the first half-life: 1 kg ÷ 2 = 0.5 kg
After the second half-life: 0.5 kg ÷ 2 = 0.25 kg
After the third half-life: 0.25 kg ÷ 2 = 0.125 kg
Therefore, after 6 days, there will be 0.125 kg (or 125 gms) of the radioactive material left.
So, the correct answer is option A) 125 gms.
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Community Answer
Half life of a radioactive material is 2 days. If the original materia...
First half life.;
1000g->500g.
2nd half life.;
500g->250g.
3rd half life .;
250g->125g
1000g->500g.
2nd half life.;
500g->250g.
3rd half life .;
250g->125g
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Half life of a radioactive material is 2 days. If the original material is 1 kg, then how much of it will be left after 6 days ?a)125 gmsb)250 gmsc)500 gmsd)750 gmsCorrect answer is option 'A'. Can you explain this answer?
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