ECAT Pre Engineering Physics Chapter 20 MCQ Test With Answer

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

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

00:00
Question # 1

Tick the series which lie/s in. the infra-red region.

Question # 2

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

Question # 3

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

Question # 4

The life time of metastable state is equal to

Question # 5

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

Question # 6

Lyman series in the spectrum of hydrogen exists in the :

Question # 7

Balmer series was identified in:

Question # 8

Static electricity is produced by the transfer of:

Question # 9

Laser is a beam of:

Question # 10

Coulomb multiplied by volt by volt gives the unit called:

Question # 11

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

Question # 12

The He-Ne laser discharge tube is filled with:

Question # 13

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

Question # 14

Tick the series which lies in the visible region:

Question # 15

The value of the metastable state for Neon is

Submit

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


Topic Test

00:00
Submit

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

  • A
    Arian Ahmed 12 - Mar - 2024 00 Min 03 Sec 60/60
  • F
    Farzand Shah Farzand Shah 01 - Jun - 2024 00 Min 44 Sec 60/60
  • S
    suzi 11 - Feb - 2026 00 Min 45 Sec 60/60
  • B
    Bilal Javed 07 - Mar - 2024 01 Min 33 Sec 60/60
  • H
    Huzaifa Asim 26 - May - 2024 13 Min 32 Sec 60/60
  • M
    M Umer Arain 24 - Dec - 2024 00 Min 07 Sec 55/60
  • A
    Anibullah Anib 07 - Mar - 2024 01 Min 57 Sec 55/60
  • T
    Tamshi Sohail 03 - May - 2024 02 Min 37 Sec 55/60
  • C
    Chhabibullah1492 Habib 07 - Mar - 2024 05 Min 43 Sec 55/60
  • M
    Malaika Waqar 23 - Apr - 2024 06 Min 21 Sec 55/60
  • S
    Shamshad 27 - May - 2024 01 Min 13 Sec 50/60
  • S
    Sammad Ali 30 - May - 2024 01 Min 20 Sec 50/60
  • A
    Ayesha Ch 06 - Mar - 2024 01 Min 33 Sec 50/60
  • M
    m imran 18 - May - 2024 02 Min 16 Sec 50/60
  • C
    Computer mail 28 - Apr - 2026 03 Min 26 Sec 48/60

ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 An electron of the hydrogen atom in the second orbit is called its:
A. Ground state
B. Excited state
C. Ionized state
D. Any of these
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 Selenium is:
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
4 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
5 The He-Ne laser discharge tube is filled with:
A. 85% He
B. 15% He
C. 50% He
D. 60% He
6 X-ray are also known as
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
7 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
8 Balmer series was identified in:
A. 1685
B. 1785
C. 1885
D. 1985
9 The results of spectra obtained by Balmer were expressed in 1896 by:
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
10 The holes created in the L and M shells are occupied by transitions of:
A. Electrons from lower states
B. Electrons from higher state
C. Positrons from higher states
D. Electrons from K shell

Test Questions

Share your comments & questions here

Guest
  • Salmankhan

    Salmankhan

    01 Feb 2018

    Some mcqs having wrong answers.

    Like
    Reply