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

Question # 2

CT scanning is the abbreviated name of

Question # 3

Braking radiation causes:

Question # 4

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

Question # 5

The electric field lines start from:

Question # 6

The process of formation of spectrum is called:

Question # 7

The value of the metastable state for Neon is

Question # 8

Lyman series in the spectrum of hydrogen exists in the :

Question # 9

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

Question # 10

X-ray are also known as

Question # 11

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

Question # 12

A metastable stae:

Question # 13

The spectrum emitted from hydrogen filled discharge tube is:

Question # 14

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

Question # 15

The inkjet printer eject a thin stream 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
  • 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
  • M
    MusiCore 20 - Mar - 2023 04 Min 38 Sec 40/60

ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The natural arrangement of colours in the spectrum of white light spectrum is
A. VIBGYOR
B. ROYBGIV
C. ROYBIGV
D. BIGROYV
2 X-rays can penetrate in a solid matte through a distance of several:
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
3 The life time of metastable state is equal to
A. Life time of excited state
B. Greater than by excited state
C. Zero
D. Less than by excited state
4 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
5 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
6 Laser is a beam of:
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
7 Tick the series which lies in the visible region:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
8 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
9 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
10 Tick the series which lie/s in. the infra-red region.
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!