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131I is an isotope of Iodine that beta decays to an isotope of Xenon with a half-life of 8 days. A small amount of a serum labelled with 131I is injected into the blood of a person. The activity of the amount of
20
Oct
131I is an isotope of Iodine that beta decays to an isotope of Xenon with a half-life of 8 days. A small amount of a serum labelled with 131I is injected into the blood of a person. The activity of the amount of Column 2 gives certain systems undergoing a process. Column 1 suggests changes [...]
In a region at a distance r from z axis , magnetic field B = B0rtk is present where B0 is constant and t is time. Then the magnitude of induced electric field at a distance r from z axis is given by
20
Oct
In a region at a distance r from z axis , magnetic field B = B0rtk is present where B0 is constant and t is time. Then the magnitude of induced electric field at a distance r from z axis is given by In a region at a distance r from z axis magnetic field [...]
The isotope 12B5 having a mass 12.014 u undergoes beta decay to 12C6. 12C6 has an excited state of the nucleus 12C*6) at 4.041 MeV above its ground state. If 12B5 decays to 12C*6,
20
Oct
The isotope 12B5 having a mass 12.014 u undergoes beta decay to 12C6. 12C6 has an excited state of the nucleus 12C*6) at 4.041 MeV above its ground state. If 12B5 decays to 12C*6, The isotope 12B5 having a mass 12.014 u undergoes beta decay to 12C6. 12C6 has an excited state of the nucleus [...]
A freshly prepared sample of a radioisotope of half-life 1386 s has activity 10^3 disintegrations per second. Given that 1n 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest integer percentage)
20
Oct
A freshly prepared sample of a radioisotope of half-life 1386 s has activity 10^3 disintegrations per second. Given that 1n 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest integer percentage) A freshly prepared sample of a radioisotope of half-life 1386 s has activity 10^3 disintegrations per second. Given that [...]
A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2 , where k is a constant. The power delivered to the particle by the force acting on it is
20
Oct
A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2 , where k is a constant. The power delivered to the particle by the force acting on it is A particle of mass m is moving in a [...]
The kinetic energy k of a particle moving along a circle of radius R depends on the distance s as KE=as^2 ,The force acting on the particle is
20
Oct
The kinetic energy k of a particle moving along a circle of radius R depends on the distance s as KE=as^2 ,The force acting on the particle is the force acting on the particle is The kinetic energy k of a particle moving along a circle of radius R depends on the distance s as [...]
Figure shows the vertical section of a frictionless surface. A block of mass 2kg is released from rest from position A, its KE as it reaches position C is (g=10ms^−2)
20
Oct
Figure shows the vertical section of a frictionless surface. A block of mass 2kg is released from rest from position A, its KE as it reaches position C is (g=10ms^−2) Figure shows the vertical section of a frictionless surface. A block of mass 2kg is released from rest from position A its KE as it [...]
The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is
20
Oct
The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 [...]
The activity of a freshly prepared radioactive sample is 10^10 disintegrations per second, whose mean life is 10^9 s. The mass of an atom of this radioisotopes is 10^-25 kg. The mass
20
Oct
The activity of a freshly prepared radioactive sample is 10^10 disintegrations per second, whose mean life is 10^9 s. The mass of an atom of this radioisotopes is 10^-25 kg. The mass The activity of a freshly prepared radioactive sample is 10^10 disintegrations per second whose mean life is 10^9 s. The mass of an [...]
Power supplied to a mass 2kg varies with time as P=3t^2/2 watt. Here t is in second . If velocity of particle at t=0 is v=0, the velocity of particle at time t=2s will be:
20
Oct
Power supplied to a mass 2kg varies with time as P=3t^2/2 watt. Here t is in second . If velocity of particle at t=0 is v=0, the velocity of particle at time t=2s will be: Power supplied to a mass 2kg varies with time as P=3t^2/2 watt. Here t is in second . If velocity [...]