JEE Mains Physics 2002-2019 Solved Video Solutions
When U 238 nucleus originally at rest, decays by emitting an alpha particle having a speed u , the recoil speed of the residual nucleus is
04
Sep
When U 238 nucleus originally at rest, decays by emitting an alpha particle having a speed u , the recoil speed of the residual nucleus is decays by emitting an alpha particle having a speed 'u' the recoil speed of the residual nucleus is When U 238 nucleus originally at rest September 4, 2021 Category: [...]
An α-particle of energy 5 MeV is scattered through 180^∘ by a fixed uranium nucleus. The distance of the closest approach is of the order of
04
Sep
An α-particle of energy 5 MeV is scattered through 180^∘ by a fixed uranium nucleus. The distance of the closest approach is of the order of An α-particle of energy 5 MeV is scattered through 180^∘ by a fixed uranium nucleus. The distance of the closest approach is of the order of September 4, 2021 [...]
The above is a plot of binding energy per nucleon Eb, against the nuclear mass M;A, B, C, D, E, F correspond to different nuclei. Consider four reactions : where ϵ is the energy released ? In which reaction is ϵ positive ?
04
Sep
The above is a plot of binding energy per nucleon Eb, against the nuclear mass M;A, B, C, D, E, F correspond to different nuclei. Consider four reactions : where ϵ is the energy released ? In which reaction is ϵ positive ? -e against the nuclear mass M;A B C D F correspond to [...]
A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α-particles and 2 positrons. The ratio of number of neutrons to that of protons in the final nucleus will be
04
Sep
A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α-particles and 2 positrons. The ratio of number of neutrons to that of protons in the final nucleus will be A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α-particles and 2 positrons. The ratio of number of [...]
Statement – 1 : A nucleus having energy E1 decays by β− emission to daughter nucleus having energy E2, but the β− rays are emitted with a continuous energy spectrum having end point energy E1−E2. Statement – 2 : To conserve energy and momentum in β-decay at least three particles must take part in the transformation.
04
Sep
Statement – 1 : A nucleus having energy E1 decays by β− emission to daughter nucleus having energy E2, but the β− rays are emitted with a continuous energy spectrum having end point energy E1−E2. Statement – 2 : To conserve energy and momentum in β-decay at least three particles must take part in the [...]
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Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725×10^−27 kg ,
Mass of electron =9×10^−31 kg) ,
Mass of proton =1.6725×10^−27 kg ,
Statement - 1 : A nucleus having energy E1 decays by β− emission to daughter nucleus having energy E2 ,
A diatomic molecule is made of two masses m1 and m2 which are separated by a distance r. If we calculate its rotational energy by applying Bohr’s rule of angular momentum quantization, its energy will be given by: (n is an integer)
04
Sep
A diatomic molecule is made of two masses m1 and m2 which are separated by a distance r. If we calculate its rotational energy by applying Bohr’s rule of angular momentum quantization, its energy will be given by: (n is an integer) A diatomic molecule is made of two masses m1 and m2 [...]
Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725×10^−27 kg, Mass of proton =1.6725×10^−27 kg ,Mass of electron =9×10^−31 kg)
04
Sep
Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725×10^−27 kg, Mass of proton =1.6725×10^−27 kg ,Mass of electron =9×10^−31 kg) Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725×10^−27 [...]
An electromagnetic wave of intensity 50Wm^−(2) enters in a medium of refractive index ‘n’ without any loss .The ratio of the magnitudes of magnetic fields of the wave before and after entering into the medium are respectively, given by:
07
Jun
An electromagnetic wave of intensity 50Wm^−(2) enters in a medium of refractive index ‘n’ without any loss .The ratio of the magnitudes of magnetic fields of the wave before and after entering into the medium are respectively, given by: In free space the energy of electromagnetic wave in electric field is UE and in magnetic [...]
If the magnetic field of a plane electromagnetic wave is given by (The speed of light = 3×10^8 m/s ) B=100×10^−6sin[2π×2×10^15(t−x/c)] then the maximum electric field associated with it is :
07
Jun
If the magnetic field of a plane electromagnetic wave is given by (The speed of light = 3×10^8 m/s ) B=100×10^−6sin[2π×2×10^15(t−x/c)] then the maximum electric field associated with it is : If the magnetic field of a plane electromagnetic wave is given by (The speed of light = 3×10^8 m/s ) B=100×10^−6sin[2π×2×10^15(t−x/c)] then the maximum [...]
In free space the energy of electromagnetic wave in electric field is UE and in magnetic field is UB. Then
07
Jun
In free space the energy of electromagnetic wave in electric field is UE and in magnetic field is UB. Then In free space the energy of electromagnetic wave in electric field is UE and in magnetic field is UB. Then June 7, 2021 Category: Chapter 15 - Electromagnetic Waves , JEE Mains Physics 2002-2019 Solved [...]