Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 85

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The circumference of the second orbit of an atom or ion having single electron, is $4 \times 10^{- 9} m$ . The de Broglie wavelength of electron revolving in this orbit should be:

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Important Questions on Atoms

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Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 86

The radius of the

4^{t h}

Bohr orbit is

0.864 n m

. The de Broglie wavelength of the electron in that orbit is:

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Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 87

An electron is moving in Bohr's fourth orbit. Its de-Broglie wavelength is

λ

. What is the circumference of the fourth orbit?

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Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 88

Which of the following is the wavelength of the electron orbiting in the first excited state in hydrogen atom?

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Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 89

Consider an electron in

n^{t h}

orbit of a hydrogen atom in Bohr's model. The circumference of the orbit can be expressed in terms of de-Broglie wavelength

λ

as;

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Achieve CUET (UG) Physics Practice Book>Chapter 12 - Atoms>Exercise>Q 90

Which of the following is quantised in Bohr's postulates