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

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ECAT Computer Science Physics Ch 20 Test
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Online MCQ`s Test For Chapter 20 "ECAT Physics Chapter 20 Atomic Spectra Online Test"

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ECAT Physics Chapter 20 Atomic Spectra Online Test

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Question # 1

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

Question # 2

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

Question # 3

The range of wavelengths of colurs in the visible colours is

Question # 4

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

Question # 5

Balmer series was identified in:

Question # 6

The life time of metastable state is equal to

Question # 7

Lyman series in the spectrum of hydrogen exists in the :

Question # 8

A metastable stae:

Question # 9

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

Question # 10

Selenium is:

Question # 11

X-ray are also known as

Question # 12

The He-Ne laser discharge tube is filled with:

Question # 13

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

Question # 14

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

Question # 15

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

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