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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

The decay constant λ of a certain radioactive material is 0.2166 per day. The average life τ of the radioactive material is ______

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प्रश्न

The decay constant λ of a certain radioactive material is 0.2166 per day. The average life τ of the radioactive material is ______ 

पर्याय

  • 5.332 days

  • 4.617 days

  • 2.166 days

  • 1.083 days

MCQ
रिकाम्या जागा भरा
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उत्तर

The decay constant λ of a certain radioactive material is 0.2166 per day. The average life τ of the radioactive material is 4.617 days.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 15: Structure of Atoms and Nuclei - MCQ’S

संबंधित प्रश्‍न

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\[\ce{_88^226Ra->_2^4\alpha {+}}\] ______.


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What is beta decay?


The radioactivity of a sample is R1 at a time T1 and R2 at a time T2. If the half-life of the specimen is T, the number of atoms that have disintegrated in the time (T1 - T2) is proportional to ______.


A radioactive element has rate of disintegration 10,000 disintegrations per minute at a particular instant. After four minutes it become 2500 disintegrations per minute. The decay constant per minute is ______.


For radioactive substances, the fraction of its initial quantity (N0) which will disintegrate in its average lifetime is about ______.

(e = 2.71)


A radioactive sample S1​ having the activity A1​ has twice the number of nuclei as another sample S2​ of activity A2​ If A2​ = 2A1​ then the ratio of half-life of S1​ to the half-life of S2​ is ______.


Show that the number of nuclei of a radioactive material decreases exponentially with time.


In one mean lifetime of a radioactive element the fraction of the nuclei that has disintegrated is ______. [e is the base of natural logarithm]


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