ECAT Pre General Science Physics Chapter 20 Test

Here you can prepare ECAT Pre General Science Chapter 20 Atomic Spectra Test. Click the button for 100% free full practice test.

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ECAT Pre General Science Physics Chapter 20 MCQ Test With Answer for Physics chapter 20 (Atomic Spectra)

ECAT Pre General Science Physics Chapter 20 Test

ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test

ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test

X-rays produced in a tube operating at 105V. The speed of X-rays produced is

The He-Ne laser discharge tube is filled with:

Laser is a beam of:

The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:

An electron of the hydrogen atom in the second orbit is called its:

The first shell near the neucles is

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

Spectrum represents the number of component colours present in certain light in terms of:

The value of the metastable state for Neon is

Lyman series in the spectrum of hydrogen exists in the :

The holes created in the L and M shells are occupied by transitions of:

Balmer series was identified in:

Graph of Black body radiation is example of

The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is

If the distance between two charges is doubled,the force between them will become:

We can excite an atom by

A metastable stae:

The photocopying process is called:

Ultraviolet region lies in ______ series

The electric field lines start from:

In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is

The spectrum emitted from hydrogen filled discharge tube is:

The lasing or active medium in He-Ne laser discharge tube is:

Photons must have energy equal to

The process of formation of spectrum is called:

X-rays can penetrate in a solid matte through a distance of several:

Coulomb multiplied by volt by volt gives the unit called:

An compared to solid matter, a crack or an air bubble allows:

The life time of metastable state is equal to

Tick the series which lies in the visible region:

Prepare All ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test MCQs With Answers

Set 1

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Test Questions

X-rays produced in a tube operating at 10⁵V. The speed of X-rays produced is