ECAT Pre General Science Physics Chapter 20 MCQ Test With Answer

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

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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 20 Atomic Spectra

00:00
Question # 1

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

Question # 2

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

Question # 3

The value of the metastable state for Neon is

Question # 4

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

Question # 5

Static electricity is produced by the transfer of:

Question # 6

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

Question # 7

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

Question # 8

Lyman series in the spectrum of hydrogen exists in the :

Question # 9

The first shell near the neucles is

Question # 10

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

Question # 11

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

Question # 12

CT scanning is the abbreviated name of

Question # 13

The He-Ne laser discharge tube is filled with:

Question # 14

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

Question # 15

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

Question # 16

The photocopying process is called:

Question # 17

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

Question # 18

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

Question # 19

The range of wavelengths of colurs in the visible colours is

Question # 20

Gaussian surface is always:

Question # 21

The inkjet printer eject a thin stream of:

Question # 22

The process of formation of spectrum is called:

Question # 23

The shell closer to the nucleus is called:

Question # 24

Laser is a beam of:

Question # 25

Selenium is:

Question # 26

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

Question # 27

X-ray are also known as

Question # 28

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

Question # 29

Graph of Black body radiation is example of

Question # 30

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

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 20 Atomic Spectra MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 20 Atomic Spectra MCQ`s Test

  • R
    Rabeel Younas 06 - Jun - 2024 01 Min 25 Sec 120/120
  • H
    Hamza Mukhtair 14 - Jul - 2022 06 Min 02 Sec 85/120
  • H
    haseeb 12 - Sep - 2021 11 Min 12 Sec 65/120
  • M
    M Abduullah 22 - Apr - 2021 13 Min 54 Sec 55/120
  • W
    waqarasghar 27 - Feb - 2019 14 Min 08 Sec 55/120
  • U
    umar 12 - Aug - 2021 10 Min 50 Sec 30/120
  • M
    muskan mehboob 10 - May - 2021 10 Min 50 Sec 30/120
  • A
    Aleem Tahir 20 - Apr - 2021 10 Min 50 Sec 20/120
  • I
    ifrah Sheerazi 24 - Jun - 2021 10 Min 50 Sec 15/120
  • H
    Hassan Ali 23 - Feb - 2023 10 Min 50 Sec 0/120

ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons
A. Frequency
B. Penetrating power
C. Energy
D. Method of creation
2 The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
A. 1.24 x 10-10m
B. 7.92 x 10-20m
C. 2.78 x 10-14m
D. 3.88 x 10-11m
3 The He-Ne laser discharge tube is filled with:
A. 85% He
B. 15% He
C. 50% He
D. 60% He
4 The electric field lines start from:
A. Positive charge
B. Negative charge
C. Either A and B
D. Neutron
5 The value of the metastable state for Neon is
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
6 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
7 Balmer series was identified in:
A. 1685
B. 1785
C. 1885
D. 1985
8 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
9 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
10 The process of formation of spectrum is called:
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection

Test Questions

Is this page helpful?