Physics
Half-life of a radioactive substance is 12.5 h and its mass is 256 g. After what time, the amount of remaining substance is 1 g ?
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Aug
Half-life of a radioactive substance is 12.5 h and its mass is 256 g. After what time, the amount of remaining substance is 1 g ? Half-life of a radioactive substance is 12.5 h and its mass is 256 g. After what time the amount of remaining substance is 1 g ? August 16, 2020 [...]
A sample of radioactive elements contains 4×1010 active nuclei. If half-life of element is 10 days, then the number of decayed nuclei after 30 days is
16
Aug
A sample of radioactive elements contains 4×1010 active nuclei. If half-life of element is 10 days, then the number of decayed nuclei after 30 days is A sample of radioactive elements contains 4×1010 active nuclei. If half-life of element is 10 days then the number of decayed nuclei after 30 days is August 16, 2020 [...]
A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after two mean lives is .
16
Aug
A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after two mean lives is . A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after [...]
The half-life of radium is about 1600yr. Of 100 g of radium existing now, 25 g will remain unchanged after
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Aug
The half-life of radium is about 1600yr. Of 100 g of radium existing now, 25 g will remain unchanged after 25 g will remain unchanged after The half-life of radium is about 1600yr. Of 100 g of radium existing now August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 [...]
A radioactive sample with a half-life of 1 month has the label : ‘Activity= 2 micro curie on 1-8-1991’. What would be its activity two months earlier?
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Aug
A radioactive sample with a half-life of 1 month has the label : ‘Activity= 2 micro curie on 1-8-1991’. What would be its activity two months earlier? A radioactive sample with a half-life of 1 month has the label : 'Activity= 2 micro curie on 1-8-1991'. What would be its activity two months earlier? August [...]
The nucleus .11548Cd after two successive β−decays will give.
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Aug
The nucleus .11548Cd after two successive β−decays will give. The nucleus .11548Cd after two successive β−decays will give. August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
An element A decays into element C by a two-step process : A→B+.2He4 B→C+2e⎯ Then.
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Aug
An element A decays into element C by a two-step process : A→B+.2He4 B→C+2e⎯ Then. An element A decays into element C by a two-step process : A→B+.2He4 B→C+2e⎯ Then. August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The nuclei .6C13&.7N14 can be described as
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Aug
The nuclei .6C13&.7N14 can be described as The nuclei .6C13&.7N14 can be described as August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The nucleus 6C12 absorbs an energetic neutron and emits a beta particle β. The resulting nucleus is
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Aug
The nucleus 6C12 absorbs an energetic neutron and emits a beta particle β. The resulting nucleus is The nucleus 6C12 absorbs an energetic neutron and emits a beta particle β. The resulting nucleus is August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video [...]
The constituents of atomic nuclei are believed to be
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Aug
The constituents of atomic nuclei are believed to be The constituents of atomic nuclei are believed to be August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,