Which one will be answer....im stuck
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Thor1:
thank you
So, half life of 20 s means that after 20 s, the substance will decay into half
oh!!!
Here, 40 gram A1, whose half life is 20 s, is present. So after, 40 s, the amount of A1 will be like this:
40 g → 20g → 10 g
u r quite intelligent
Similarly, A2 is present in 160 g amount. It's half life is 10 seconds. So during 40 seconds, it will undergo 4 decay periods. So amount of A2 will be like this:
160 g → 80 g → 40 g → 20 g → 10 g
Thus, after 40 seconds both A1 and A2 will be equal to 10 grams
That's you answer: 40 s
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1
hey friend! here is your answer-
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according to question,The half period that when it goes half so it decays.
first 20 sec it will be divided into half.
for A it will be left with 20 sec as 40-20-10 grams
for B it will be 10 sec so 160-80-40 grams
Now for next 20 seconds
for A will be left with 20-10 as it went once.
for B will be left 10 sec so 40-20-10 as it went twice.
so for the answer it will be 40 seconds so 2 ND part.
_______________________________________________________
hope it helps. please mark it brainliest.
#brailystar-Pulkit
______________________________________________________
according to question,The half period that when it goes half so it decays.
first 20 sec it will be divided into half.
for A it will be left with 20 sec as 40-20-10 grams
for B it will be 10 sec so 160-80-40 grams
Now for next 20 seconds
for A will be left with 20-10 as it went once.
for B will be left 10 sec so 40-20-10 as it went twice.
so for the answer it will be 40 seconds so 2 ND part.
_______________________________________________________
hope it helps. please mark it brainliest.
#brailystar-Pulkit
hope it helps...................
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