Atomic Spectra - Set 1

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MM

Mashaal Masha

Oct 16, 2022

Choose the correct options for the following questions.

The first series which was identified in the spectrum of hydrogen is called:

Difficulty: Easy

A:

Lyman series

B:

Balmer seris

C:

Paschen series

D:

Brackett series

Balmer series was identified in:

Difficulty: Easy

A:

1685

B:

1785

C:

The natural arrangement of colors in the spectrum of white light spectrum is:

D:

1985

Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is:

Difficulty: Easy

A:

Less than atmospheric pressure

B:

Much less than atmospheric pressure

C:

Greater than atmospheric pressure

D:

Much greater than atmospheric pressure

Balmer series lies in that region of electromagnetic wave spectrum which is called:

Difficulty: Easy

A:

Visible region

B:

Invisible region

C:

Infra-red region

D:

Ultraviolet region

The natural arrangement of colors in the spectrum of white light spectrum is:

Difficulty: Easy

A:

VIBGYOR

B:

ROYBGIV

C:

ROYBIGV

D:

BIGROYV

The range of wavelength of colors in the visible colors is:

Difficulty: Easy

A:

410 nm to 456 nm

B:

10 nm to 56 nm

C:

410 nm to 656 nm

D:

910 nm to 956 nm

Tick the incorrect statement:

Difficulty: Easy

A:

R_{H}=1.097 \times 10^{7} m^{-1}

B:

h=6.62 \times 10^{-34} Js

C:

\lambda_{red}=656 nm

D:

\lambda_{violet}=700 nm

The results of spectra obtained by Blamer were expressed in 1896 by:

Difficulty: Easy

A:

Bohr

B:

Rydberg

C:

Planck

D:

Rutherford

The process of formation of spectrum is called:

Difficulty: Easy

A:

Interference

B:

Spectroscopy

C:

Dispersion

D:

Reflection

The value of Rydberg's constant is:

Difficulty: Easy

A:

1.0974 \times 10^{-7} m^{-1}

B:

1.0974 \times 10^{7} m^{-1}

C:

1.0974 \times 10^{4} cm^{-1}

D:

1.0974 \times 10^{10} cm^{-1}

Atomic Spectra - Set 1