ECAT Pre General Science Chapter 20 online mcq test with answers for Physics chapter 20 (Atomic Spectra)

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ECAT Physics Chapter 20 Important MCQ's

Sr.#	Question	Answer
1	Selenium is:	A. An insulator B. A conductor C. Both A and B D. Excellent conductor
2	X-ray are also known as	A. Roentgen rays B. Maxwell rays C. Plank range D. Einstein rays
3	Balmer series lies in that region of electromagnetic wave spectrum which is called:	A. Visible region B. Invisible region C. Infra-red region D. ultraviolet region
4	We can excite an atom by	A. Bombardment of particles B. Radiating photons C. Providing potential difference D. All answer are true
5	The natural arrangement of colours in the spectrum of white light spectrum is	A. VIBGYOR B. ROYBGIV C. ROYBIGV D. BIGROYV
6	CT scanning is the abbreviated name of	A. Computed Technology B. Computed Technique C. Computed Technology D. Computerized Technique
7	The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:	A. one B. two C. three D. four
8	Tick the series which lie/s in. the infra-red region.	A. Pfund series B. Brackett series C. Paschen series D. All of these
9	The electric field lines start from:	A. Positive charge B. Negative charge C. Either A and B D. Neutron
10	Static electricity is produced by the transfer of:	A. Electrons B. Protons C. One fluid D. Two fluid

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ECAT Pre General Science Physics Chapter 20 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 20 Atomic Spectra

ECAT Pre General Science Physics Chapter 20 Atomic Spectra

Tick the series which lies in the visible region:

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

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

Laser is a beam of:

The shell closer to the nucleus is called:

The He-Ne laser discharge tube is filled with:

Tick the series which lie/s in. the infra-red region.

The process of formation of spectrum is called:

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

The range of wavelengths of colurs in the visible colours is

Gaussian surface is always:

Braking radiation causes:

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

Graph of Black body radiation is example of

CT scanning is the abbreviated name of

The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:

Lyman series in the spectrum of hydrogen exists in the :

X-ray are also known as

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

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

The photocopying process is called:

The value of the metastable state for Neon is

A metastable stae:

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

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

The natural arrangement of colours in the spectrum of white light spectrum is

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

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

Ultraviolet region lies in ______ series

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

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ECAT Physics Chapter 20 Important MCQ's

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