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IMPORTANT
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The ratio of ionisation energy of Bohr's Hydrogen atom and Bohr's Hydrogen-like Lithium atom is,

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Important Questions on Atomic Physics

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JEE Main
IMPORTANT
What is the angular momentum of an electron in Bohr's hydrogen atom, whose energy is -0.544 eV?
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JEE Main
IMPORTANT
The ratio between total acceleration of the electron in a singly ionized helium atom and hydrogen atom (both in ground state) is
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JEE Main
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A hydrogen atom in its ground state absorbs 10.2 eV energy. The orbital angular momentum is increased by
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JEE Main
IMPORTANT
The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is
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JEE Main
IMPORTANT
Minimum excitation potential of Bohr's first orbit in hydrogen atom is
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JEE Main
IMPORTANT

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 orbit around the nucleus in discrete orbits is inversely proportional to the cube of principal quantum number.

(IV) Binding force with which the electron is bound to the nucleus increases as it shifts to outer orbits.

Select the correct answer using the codes given below

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The de-Broglie wavelength of an electron in the first Bohr orbit is
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IMPORTANT
In a hypothetical Bohr hydrogen, the mass of the electron is doubled. The energy, E0 and the radius, r0 of the first orbit, will be? (a0 is the Bohr radius)