ECAT Pre Computer Science Chapter 20 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

ECAT Physics Chapter 20 Atomic Spectra

00:00
Question # 1

The photocopying process is called:

Question # 2

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

Question # 3

The process of formation of spectrum is called:

Question # 4

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

Question # 5

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

Question # 6

The life time of metastable state is equal to

Question # 7

The spectrum emitted from hydrogen filled discharge tube is:

Question # 8

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

Question # 9

The inkjet printer eject a thin stream of:

Question # 10

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

Question # 11

Ultraviolet region lies in ______ series

Question # 12

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

Question # 13

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

Question # 14

Tick the series which lies in the visible region:

Question # 15

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

Submit

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


Topic Test

00:00
Submit

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

  • H
    Heer 07 - Jan - 2024 00 Min 36 Sec 60/60
  • U
    Umer Usman 09 - Mar - 2024 01 Min 35 Sec 60/60
  • M
    Muneeb ur Rehman 28 - Jun - 2026 01 Min 36 Sec 60/60
  • I
    Ismailkhan Khanlala 17 - Aug - 2023 00 Min 42 Sec 55/60
  • F
    Fadi King 04 - Nov - 2025 01 Min 24 Sec 52/60
  • A
    Atal Khan 15 - Aug - 2023 00 Min 24 Sec 50/60
  • U
    Unknown 07 - Jan - 2024 01 Min 10 Sec 50/60
  • Z
    Zahida Attique 21 - May - 2024 01 Min 29 Sec 50/60
  • Z
    Zia Ullah Chahal 08 - Mar - 2024 02 Min 07 Sec 45/60
  • U
    Understand Islam Understand Islam 16 - Jul - 2024 00 Min 03 Sec 40/60
  • S
    Sanjana Athwani 19 - Jan - 2024 03 Min 10 Sec 40/60
  • S
    Shaheer Mustafa 07 - Mar - 2024 03 Min 29 Sec 40/60
  • B
    Bushra Rehmat 14 - Jul - 2023 03 Min 29 Sec 40/60
  • A
    Abdullah Baloch 10 - Aug - 2024 03 Min 51 Sec 40/60
  • M
    Mian House 31 - May - 2024 04 Min 11 Sec 40/60

ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The process of formation of spectrum is called:
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
2 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
3 Lyman series in the spectrum of hydrogen exists in the :
A. Infra-red region
B. Visible region
C. Ultraviolet region
D. Both(A) and (B)
4 CT scanning is the abbreviated name of
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
5 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
6 In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is
A. Helium
B. Neon
C. Both
D. None of these
7 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
8 Energy required by an electron revolving in certain orbit to jump to an excited state is called:
A. Ionization energy
B. Ionization potential
C. Excitation energy
D. Excitation potential
9 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
10 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid

Test Questions