ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test

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  • Chapter NameCh 20 - Atomic Spectrs
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ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test

  • Total Questions30

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ECAT Pre General Science Physics Chapter 20 Atomic Spectra Online Test

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Question # 1

Tick the series which lies in the visible region:

Question # 2

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

Question # 3

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

Question # 4

The spectrum emitted from hydrogen filled discharge tube is:

Question # 5

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

Question # 6

X-ray are also known as

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

We can excite an atom by

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Graph of Black body radiation is example of

Question # 15

Selenium is:

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

Gaussian surface is always:

Question # 20

Braking radiation causes:

Question # 21

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

Question # 22

Lyman series in the spectrum of hydrogen exists in the :

Question # 23

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

Question # 24

The photocopying process is called:

Question # 25

Laser is a beam of:

Question # 26

Static electricity is produced by the transfer of:

Question # 27

The life time of metastable state is equal to

Question # 28

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

Question # 29

CT scanning is the abbreviated name of

Question # 30

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

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