Cengage JEE Mains Physics by B.M Sharma
A wire of length L0 is supplied heat to raise its temperature by T. if γ is the coefficient of volume expansion of the wire and Y is Young’s modulus of the wire then the energy density stored in the wire is
05
Sep
A wire of length L0 is supplied heat to raise its temperature by T. if γ is the coefficient of volume expansion of the wire and Y is Young’s modulus of the wire then the energy density stored in the wire is The absolute coefficient of expansion of a liquid is 7 times that the [...]
A clock with a metal pendulum beating seconds keeps correct time at 0∘C. If it loses 12.5 s a day at 25∘C, the coefficient of linear expansion of metal pendulum is
05
Sep
A clock with a metal pendulum beating seconds keeps correct time at 0∘C. If it loses 12.5 s a day at 25∘C, the coefficient of linear expansion of metal pendulum is A clock with a metal pendulum beating seconds keeps correct time at 0∘C. If it loses 12.5 s a day at 25∘C the coefficient [...]
A solid whose volume does not change with temperature floats in a liquid. For two different temperatures t1 and t2 of the liquid, fractions f1 and f2 of the volume of the solid remain submerged in the liquid. The coefficient of volume expansion of the liquid is equal to
05
Sep
A solid whose volume does not change with temperature floats in a liquid. For two different temperatures t1 and t2 of the liquid, fractions f1 and f2 of the volume of the solid remain submerged in the liquid. The coefficient of volume expansion of the liquid is equal to A solid whose volume [...]
An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of the wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of volume expansion of iron is 3.6×10^−5 / degree C)
05
Sep
An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of the wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of volume expansion of iron is 3.6×10^−5 / degree C) The [...]
The absolute coefficient of expansion of a liquid is 7 times that the volume coefficient of expansion of the vessel. Then the ratio of absolute and apparent expansion of the liquid is
05
Sep
The absolute coefficient of expansion of a liquid is 7 times that the volume coefficient of expansion of the vessel. Then the ratio of absolute and apparent expansion of the liquid is The absolute coefficient of expansion of a liquid is 7 times that the volume coefficient of expansion of the vessel. Then the ratio [...]
An electron in a Bohr orbit of hydrogen atom with the quantum number N2 has an angular momentum 4.2176×10^−34 kg m^2 s^−1. If the electron drops from this level to the next lower level , the wavelength of this lines is
05
Jun
An electron in a Bohr orbit of hydrogen atom with the quantum number N2 has an angular momentum 4.2176×10^−34 kg m^2 s^−1. If the electron drops from this level to the next lower level , the wavelength of this lines is An electron in a Bohr orbit of hydrogen atom with the quantum number N2 [...]
The circumference of the second Bohr orbit of electron in hydrogen atom is 600 nm . The potential difference that must be applied between the plates so that the electron have the de Broglie wavelength corresponding in this circumference is
05
Jun
The circumference of the second Bohr orbit of electron in hydrogen atom is 600 nm . The potential difference that must be applied between the plates so that the electron have the de Broglie wavelength corresponding in this circumference is Angular momentum (L) and radius (r) of a hydrogen atom are related as June 5, [...]
An electron and a photon have same wavelength . If p is the moment of electron and E the energy of photons, the magnitude of p/E in SI unit is
05
Jun
An electron and a photon have same wavelength . If p is the moment of electron and E the energy of photons, the magnitude of p/E in SI unit is An electron and a photon have same wavelength . If p is the moment of electron and E the energy of photons the magnitude of [...]
Angular momentum (L) and radius (r) of a hydrogen atom are related as
05
Jun
Angular momentum (L) and radius (r) of a hydrogen atom are related as Angular momentum (L) and radius (r) of a hydrogen atom are related as June 5, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 29 - Atomic Structure ,
According to Bohr’s theory of hydrogen atom , the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit
05
Jun
According to Bohr’s theory of hydrogen atom , the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit According to Bohr's theory of hydrogen atom the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit [...]