Atoms and Nuclei-Hydrogen Spectrum (NEET Physics): Questions 1 - 6 of 14

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Passage

Read the passage given below and answer the questions that follow:

A gas of identical hydrogen like atoms has some atoms in ground state and some atoms in a particular excited state and there are no atoms in any other energy level. The atoms of the gas make transition to a higher energy state by absorbing monochromatic light of wavelength 304 Å. Subsequently, the atoms emit radiation of only six different photon energies. Some of emitted photons have wavelength 304 Å, some have wavelength more and some have less than 304 Å (Take h c = 12420 eV- Å)

Question number: 1 (1 of 1 Based on Passage) Show Passage

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

Find the principal quantum number of the initially excited

Choices

Choice (4) Response
a.

1

b.

3

c.

2

d.

4

Question number: 2

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

Which of the following transitions in hydrogen atoms emit photons of highest frequency?

Choices

Choice (4) Response
a.

n = 1 to n = 2

b.

n = 2 to n = 6

c.

n = 6 to n = 2

d.

n = 2 to n = 1

Question number: 3

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

Ratio of the wavelengths of first line of Lyman series and first line of Balmer series is

Choices

Choice (4) Response
a.

4: 9

b.

5: 27

c.

1: 3

d.

27: 5

Question number: 4

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

Consider a hydrogen like atom whose energy in n th excited state is given by En=13.6Z2n2 when this excited atom makes a transition from excited state to ground state, most energetic photons have energy E max = 52.224 eV and least energetic photons have energy E min =1224 eV. The atomic number of atom is,

Choices

Choice (4) Response
a.

5

b.

2

c.

4

d. None of the above

Question number: 5

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

The energy of electron in the n th orbit of hydrogen atom is expressed as En=13.6n2eV wavelength of Lyman series will be

Choices

Choice (4) Response
a.

910 Å, 1213 Å

b.

1315 Å , 1530 Å

c.

5463 Å, 7858 Å

d. None of the above

Question number: 6

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

In the following atoms and molecule for the transition from n = 2 to n = 1, the spectral line of minimum wavelength will be produced by,

Choices

Choice (4) Response
a.

Di-ionized lithium

b.

Hydrogen atom

c.

Uni-ionized helium

d.

Deuterium atom

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