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MOTION-RADIOACTIVITY & NUCLEAR PHYSICS-Exercise -1
- Radioactivity is a-
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- If the pressure on a radioactive material is increased three tim...
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- What will be the effect of dissolving a radioactive material in H...
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- What will happen when a radioactive substance with mean life 2 xx ...
03:14
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- The half life of a radioactive material is 20 days . It it is ...
02:21
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- The decay constant of the end product of a radioactive series is
01:16
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- A fraction of (5)/(9) of a radioactive substance decays in time. ...
02:59
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- If the quantify of radioactive material reduces by 10% in 5days...
05:45
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- The activity of a sample reduces from A(0) "to" (A(0))/(sqrt(3)) in on...
01:47
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- Half life of radium is 1620 years . How many radium nuclei dec...
03:29
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- A radioactive sample at any instant has its disintegration rate 5000 d...
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- 90% of a radioactive sample is left undecayed after time t has elapese...
03:25
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- A radio active sample contains 10^(6) radioactive nucleus it s h...
02:20
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- 1 mg radium has 2.68 xx 10^(18) atoms. Its half-life is 1620 years. Ho...
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- If the activity of radioactive sample drops to 1//32 of its initi...
02:06
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- A freshly prepared radioactive source of half life period of 2 hour em...
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- A radioactive sample contains two elements P and Q . The mass ...
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- The radioactive sources A and B of half lives of 2hr and 4hr respectiv...
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- The half life of polonium is 140 days. In what time will 15 g of polon...
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- The half life of radium is 1600 years . In how much time will ...
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