Atoms and Nuclei-Bohr Model (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 1 of 1

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Question number: 1

» Atoms and Nuclei » Bohr Model

Appeared in Year: 2015

MCQ▾

Question

A donor atom in a semiconductor has a loosely bound electron. The orbit of this electron is considerably affected by the semiconductor material but behaves in many ways like an electron orbiting a hydrogen nucleus. Given that the electron has an effective mass of 0.07me, (where me is mass of the electron) and the space in which it moves has a permittivity 13ε0 , then the radius of the electron’s lowermost energy orbit will be close to (The Bohr radius of the hydrogen atom is 0.53 Å)

Choices

Choice (4) Response

a.

10 Å

b.

100 Å

c.

243 Å

d.

0.53 Å

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