Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 – t1) between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed is
20
Oct
The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 – t1) between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed is The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 - t1) between the time [...]
A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the number of neutrons to that of protons in the final nucleus
20
Oct
A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the number of neutrons to that of protons in the final nucleus A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the [...]
These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays into two daughter nuclei of equal masses M/2 each. The speed of light is c.
20
Oct
These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays into two daughter nuclei of equal masses M/2 each. The speed of light is c. These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays [...]
A triangular wire frame (each side = 2 m) is placed in a region of time variant magnetic field dB/dt = ( root 3 )T/s. The magnetic field is perpendicular to the plane of the triangle and its centre coincides with the centre of triangle. The base of the triangle AB has a resistance 1(Ω) while the other two sides have resistance 2(Ω) each. The magnitude of potential difference between the points A and B will be
20
Oct
A triangular wire frame (each side = 2 m) is placed in a region of time variant magnetic field dB/dt = ( root 3 )T/s. The magnetic field is perpendicular to the plane of the triangle and its centre coincides with the centre of triangle. The base of the triangle AB has a resistance 1(Ω) [...]
In Fig (a) and (b), two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a), when IP, the current in P, changes at the rate of 5 A/s, an emf of 2 mV is induced in Q. The current in P is then switched off, and the current changing at 2 A/sis fed through Q as shows in the figure. What emf will be induced in P?
20
Oct
In Fig (a) and (b), two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a), when IP, the current in P, changes at the rate of 5 A/s, an emf of 2 mV is induced in Q. The current in P is then switched off, and the [...]
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an emf of 2 mV is induced in Q. The current in P is then switched off ,
and the current changing at 2 A/sis fed through Q as shows in the figure. What emf will be induced in P? ,
changes at the rate of 5 A/s ,
In Fig (a) and (b) ,
the current in P ,
two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a) ,
when IP ,
A small square loop of edge a and resistance R is moved with velocity v0 away from an infinitely long current carrying conductor carrying current I so that the conductor and side of square are always in same plane. Find induced current in loop at a separation of r
20
Oct
A small square loop of edge a and resistance R is moved with velocity v0 away from an infinitely long current carrying conductor carrying current I so that the conductor and side of square are always in same plane. Find induced current in loop at a separation of r the current in wire AB is [...]
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 [...]