Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 68

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If the radius of the innermost Bohr orbit is $0.53 \overset{°}{A}$ , the radius of the $4^{th}$ orbit is

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Important Questions on Atoms, Molecules and Nuclei

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 69

When the electron in hydrogen atom is excited from the

4^{th}

stationary orbit to the to

5^{th}

stationary orbit, the change in the angular momentum of the electron in joule-second is

(h = 6.64 \times 10^{- 34} J s)

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 70

When an electron in a Hydrogen atom revolves in a stationary orbit, it

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 71

An electron revolves around the nucleus. The radius of the circular orbit is

r

. To double the kinetic energy of electron its orbit radius is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 72

The fact that photons carry energy was established by

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 73

An electron in first orbit of hydrogen moves in circular orbit of radius $r$ with velocity $v$ . The current through loop is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 74

When electron jumps from

n = 4

level to

n = 1

level, the angular momentum of electron changes by

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 75

Energy required for the electron excitation in

{Li}^{+ +}

from the first to the third Bohr orbit is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 76

The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?