Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A compass needle whose magnetic moment is 60Am2 points geographic north at a certain place where H = 40μT. The compass needle experience a torque of 1⋅2 × 10^−3 N/m.
18
Oct
A compass needle whose magnetic moment is 60Am2 points geographic north at a certain place where H = 40μT. The compass needle experience a torque of 1⋅2 × 10^−3 N/m. A compass needle whose magnetic moment is 60Am2 points geographic north at a certain place where H = 40μT. The compass needle experience a torque [...]
Two identical thin bar magnets, each of length L and pole strength m are placed at right angles to each other, with the N pole of one touching the S-pole of the other. Find the magnetic moment of the system.
18
Oct
Two identical thin bar magnets, each of length L and pole strength m are placed at right angles to each other, with the N pole of one touching the S-pole of the other. Find the magnetic moment of the system. each of length L and pole strength m are placed at right angles to each [...]
The work done to turn a magnet by 60 degree from its equilibrium position is W in a uniform field. THe torque required to hold it in that position will be
18
Oct
The work done to turn a magnet by 60 degree from its equilibrium position is W in a uniform field. THe torque required to hold it in that position will be The work done to turn a magnet by 60 degree from its equilibrium position is W in a uniform field. THe torque required to [...]
Half-lives of two radioactive substances A and B are, respectively, 20 min and 40 min. Initially, the samples of A and B have equal number of nuclei. After 80 min, the ratio of the remaining number
18
Oct
Half-lives of two radioactive substances A and B are, respectively, 20 min and 40 min. Initially, the samples of A and B have equal number of nuclei. After 80 min, the ratio of the remaining number 20 min and 40 min. Initially Half-lives of two radioactive substances A and B are respectively the ratio of [...]
The radioactivity of a sample is R1 at a time T1 and R2 at a time T2. If the half-life of the specimen is T, the number of atoms that have disintegrated in the time (T2 – T1) is proportional to
18
Oct
The radioactivity of a sample is R1 at a time T1 and R2 at a time T2. If the half-life of the specimen is T, the number of atoms that have disintegrated in the time (T2 – T1) is proportional to the number of atoms that have disintegrated in the time (T2 - T1) is [...]
At any instant, the ratio of the amounts of two radioactive substances is 2:1. If their half-lives be, respectively, 12 h and 16 h, then after two days, what will be the ratio of the substances?
18
Oct
At any instant, the ratio of the amounts of two radioactive substances is 2:1. If their half-lives be, respectively, 12 h and 16 h, then after two days, what will be the ratio of the substances? 12 h and 16 h At any instant respectively the ratio of the amounts of two radioactive substances is [...]
Plutonium has atomic mass 210 and a decay constant equal to 5.8 * 10^8 s^-1. The number of alpha particles emitted per second by 1 mg plutonium is
18
Oct
Plutonium has atomic mass 210 and a decay constant equal to 5.8 * 10^8 s^-1. The number of alpha particles emitted per second by 1 mg plutonium is Plutonium has atomic mass 210 and a decay constant equal to 5.8 * 10^8 s^-1. The number of alpha particles emitted per second by 1 mg plutonium [...]
Uranium ores contain one radium-226 atom for every 2.8 * 10^6 uranium-238 atoms. Calculate the half-life of 92U238, given that the half-life of 88Ra226 is 1600 years (88Ra226 is a decay product of 92U238).
18
Oct
Uranium ores contain one radium-226 atom for every 2.8 * 10^6 uranium-238 atoms. Calculate the half-life of 92U238, given that the half-life of 88Ra226 is 1600 years (88Ra226 is a decay product of 92U238). given that the half-life of 88Ra226 is 1600 years (88Ra226 is a decay product of 92U238). Uranium ores contain one radium-226 [...]
The pole strength of a bar magnet is 48 ampere-metre and the distance between its poles is 25cm. The moment of the couple by which it can be placed at an angle of 30∘ with the uniform magnetic intensity of flux density 0.15 newton/ampere-metre will be
18
Oct
The pole strength of a bar magnet is 48 ampere-metre and the distance between its poles is 25cm. The moment of the couple by which it can be placed at an angle of 30∘ with the uniform magnetic intensity of flux density 0.15 newton/ampere-metre will be A thin bar magnet of length 2 L is [...]
When a bar magnet is placed at 90 degree to a uniform magnetic field, it is acted upon by a couple which is maximum. For
18
Oct
When a bar magnet is placed at 90 degree to a uniform magnetic field, it is acted upon by a couple which is maximum. For it is acted upon by a couple which is maximum. For When a bar magnet is placed at 90 degree to a uniform magnetic field October 18, 2020 Category: Uncategorised [...]