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The rate of decay of a radioactive element at any instant is 10^3 disintegrations s^-1. If the half-life of the element is 1 s, then the rate of decay after 1 s will be
18
Oct
The rate of decay of a radioactive element at any instant is 10^3 disintegrations s^-1. If the half-life of the element is 1 s, then the rate of decay after 1 s will be The rate of decay of a radioactive element at any instant is 10^3 disintegrations s^-1. If the half-life of the element [...]
The B – H curves (a) and (b) shown in the figure are associated with
18
Oct
The B – H curves (a) and (b) shown in the figure are associated with The B - H curves (a) and (b) shown in the figure are associated with October 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The fraction of a radioactive material which remains active after time t is 9/16. The fraction which remains active after time t/2 will be
18
Oct
The fraction of a radioactive material which remains active after time t is 9/16. The fraction which remains active after time t/2 will be The fraction of a radioactive material which remains active after time t is 9/16. The fraction which remains active after time t/2 will be October 18, 2020 Category: Uncategorised (JEE Advanced [...]
A stationary thorium nucleus ( A = 220, Z = 90 ) emits an alpha particle with kinetic energy E alpha. What is the kinetic energy of the recoiling nucleus ?
18
Oct
A stationary thorium nucleus ( A = 220, Z = 90 ) emits an alpha particle with kinetic energy E alpha. What is the kinetic energy of the recoiling nucleus ? A stationary thorium nucleus ( A = 220 Z = 90 ) emits an alpha particle with kinetic energy E alpha. What is the [...]
The half-life of At is 100 micro s. The time taken for the radioactivity of a sample of At to decay to 1/16th of its initial value is
18
Oct
The half-life of At is 100 micro s. The time taken for the radioactivity of a sample of At to decay to 1/16th of its initial value is The half-life of At is 100 micro s. The time taken for the radioactivity of a sample of At to decay to 1/16th of its initial value [...]
After an interval of one day, 1/16th initial amount of a radioactive material remains in a sample. Then, its half-life is
18
Oct
After an interval of one day, 1/16th initial amount of a radioactive material remains in a sample. Then, its half-life is 1/16th initial amount of a radioactive material remains in a sample. Then After an interval of one day its half-life is October 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
A thin bar magnet of length 2 L is bent at the mid – point so that the angle between them is 60 degree. The new length of the magnet is
18
Oct
A thin bar magnet of length 2 L is bent at the mid – point so that the angle between them is 60 degree. The new length of the magnet is A thin bar magnet of length 2 L is bent at the mid - point so that the angle between them is 60 degree. [...]
A sample of a radioactive element has a mass of 10 g at an instant t = 0. The approximate mass of this element in the sample after two mean lives is
18
Oct
A sample of a radioactive element has a mass of 10 g 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 10 g at an instant t = 0. The approximate mass of this [...]
Samples of two radioactive nuclides, X and Y, each have equal activity A at time t = 0. X has a half-life of 24 years and Y a half-life of 16 years. The samples are mixed together.
18
Oct
Samples of two radioactive nuclides, X and Y, each have equal activity A at time t = 0. X has a half-life of 24 years and Y a half-life of 16 years. The samples are mixed together. each have equal activity A at time t = 0. X has a half-life of 24 years and [...]
A magnetised wire of moment M is bent into an arc of a circle subtending an angle of 60° at the centre, then the new magnetic moment is
18
Oct
A magnetised wire of moment M is bent into an arc of a circle subtending an angle of 60° at the centre, then the new magnetic moment is A magnetised wire of moment M is bent into an arc of a circle subtending an angle of 60° at the centre then the new magnetic moment [...]