In an atom, two electrons move around the nucleus in circular orbits of radii $R$ and $4R.$ The ratio of the time taken by them to complete one revolution is : (neglect electric interaction)
In an atom, two electrons move around the nucleus in circular orbits of radii $R$ and $4R.$ The ratio of the time taken by them to complete one revolution is : (neglect electric interaction)
- A
$1 : 4$
- B
$4 : 1$
- C
$1 : 8$
- D
$8 : 1$
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Which of the following statements are true regarding Bohr's model of hydrogen atom
$(I)$ Orbiting speed of electron decreases as it shifts to discrete orbits away from the nucleus
$(II)$ Radii of allowed orbits of electron are proportional to the principal quantum number
$(III)$ Frequency with which electrons orbits around the nucleus in discrete orbits is inversely proportional to the principal quantum number
$(IV)$ Binding force with which the electron is bound to the nucleus increases as it shifts to outer orbitsSelect correct answer using the codes given belowCodes :
Which of the following statements are true regarding Bohr's model of hydrogen atom
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$(II)$ Radii of allowed orbits of electron are proportional to the principal quantum number
$(III)$ Frequency with which electrons orbits around the nucleus in discrete orbits is inversely proportional to the principal quantum number
$(IV)$ Binding force with which the electron is bound to the nucleus increases as it shifts to outer orbitsSelect correct answer using the codes given belowCodes :
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