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The magnetic field associated with a light wave is given, at the origin, by B=B0[sin(3.14×10^7)ct + sin(6.28×10^7)ct]. If this light falls on a silver plate having a work function of 4.7 eV, what will be the maximum kinetic energy of the photo electrons ? (c = 3 × 10^8ms−1,h = 6.6 × 10^−34J−s)
28
Nov
The magnetic field associated with a light wave is given, at the origin, by B=B0[sin(3.14×10^7)ct + sin(6.28×10^7)ct]. If this light falls on a silver plate having a work function of 4.7 eV, what will be the maximum kinetic energy of the photo electrons ? (c = 3 × 10^8ms−1,h = 6.6 × 10^−34J−s) at the [...]
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at the origin ,
by B=B0[sin(3.14×10^7)ct + sin(6.28×10^7)ct]. If this light falls on a silver plate having a work function of 4.7 eV ,
h = 6.6 × 10^−34J−s) ,
The magnetic field associated with a light wave is given ,
what will be the maximum kinetic energy of the photo electrons ? (c = 3 × 10^8ms−1 ,
At a given instant, say t = 0, two radioactive substances A and B have equal . The ratio of their activities RB/RA decreases according to e^−3t . If the half-life of A is In2, the half-life of B is :
28
Nov
At a given instant, say t = 0, two radioactive substances A and B have equal . The ratio of their activities RB/RA decreases according to e^−3t . If the half-life of A is In2, the half-life of B is : At a given instant say t = 0 the half-life of B is : [...]
A sample of radioactive material A, that has an activity of 10mCi(lCi=3.7×10^10 decays/s), has twice the number of nuclei as another sample of a different radioactive maternal B which has an activity of 20 mCi. The correct choices for hall-lives of A and B would then be respectively :
28
Nov
A sample of radioactive material A, that has an activity of 10mCi(lCi=3.7×10^10 decays/s), has twice the number of nuclei as another sample of a different radioactive maternal B which has an activity of 20 mCi. The correct choices for hall-lives of A and B would then be respectively : A sample of radioactive material A [...]
Surface of certain metal is first illuminated with light of wavelength λ1=350nm and then, by light of wavelength λ2=540 nm. It is found that the maximum speed of the photo electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to : (Energy of photon = 1240/λ(innm)eV)
28
Nov
Surface of certain metal is first illuminated with light of wavelength λ1=350nm and then, by light of wavelength λ2=540 nm. It is found that the maximum speed of the photo electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to : (Energy of [...]
Which one of the following configuration represents a noble gas
28
Nov
Which one of the following configuration represents a noble gas Which one of the following configuration represents a noble gas November 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The electronic configuration of silver atom in ground state is (a) [ kr] 3d^10 4s^1 (b) [ xe ]4f^145d610 6s^1
28
Nov
The electronic configuration of silver atom in ground state is (a) [ kr] 3d^10 4s^1 (b) [ xe ]4f^145d610 6s^1 The electronic configuration of silver atom in ground state is (a) [ kr] 3d^10 4s^1 (b) [ xe ]4f^145d610 6s^1 November 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be :
28
Nov
Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be : Half lives of two radioactive nuclei A and B are 10 minutes and [...]
Consider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å). The de-Broglie wavelength of this electron is :
28
Nov
Consider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å). The de-Broglie wavelength of this electron is : Consider an electron in a hydrogen atom revolving in its second excited state (having radius 4.65Å). The de-Broglie wavelength of this electron is : November 28, 2020 Category: Chapter 18 - [...]
The electron in hydrogen atom first jumps from third excited state to second excited state and subsequently to the first excited state. The ratio of the respective wavelength λ1:λ2 of the photons emitted in this process is
28
Nov
The electron in hydrogen atom first jumps from third excited state to second excited state and subsequently to the first excited state. The ratio of the respective wavelength λ1:λ2 of the photons emitted in this process is Radiation com in g from transitions n = 2 to n = 1 of hydrogen atoms fall on [...]
Total number of unpaired electrons in an atom of atomic number 29 is (a) 1 (b) 3 (c) 4 (d) 2
28
Nov
Total number of unpaired electrons in an atom of atomic number 29 is (a) 1 (b) 3 (c) 4 (d) 2 Total number of unpaired electrons in an atom of atomic number 29 is (a) 1 (b) 3 (c) 4 (d) 2 November 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]