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ECAT Pre General Science Physics Chapter 20 Atomic Spectra

ECAT Pre General Science Physics Chapter 20 Atomic Spectra

ECAT Pre General Science Physics Chapter 20 Atomic Spectra

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

The photocopying process is called:

Coulomb multiplied by volt by volt gives the unit called:

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

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

Laser is a beam of:

Energy required by an electron revolving in certain orbit to jump to an excited state is called:

Ultraviolet region lies in ______ series

The He-Ne laser discharge tube is filled with:

Photons must have energy equal to

Lyman series in the spectrum of hydrogen exists in the :

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

A metastable stae:

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

The first shell near the neucles is

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

The spectrum emitted from hydrogen filled discharge tube is:

The process of formation of spectrum is called:

Static electricity is produced by the transfer of:

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

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

Graph of Black body radiation is example of

By CAT scans, we can detect the density difference of the order of:

X-ray are also known as

In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:

The shell closer to the nucleus is called:

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

The electric field lines start from:

In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them

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

Matric Part 2/10th Class English Chapter 1 MCQ Test With Answer for Chapter 1 Hazrat Muhammad (S.A.W) an Embodiment of Justice

Biology Chapter 1 - Answers Mode

Biology Chapter 1 MCQ - PDF