12th Class PHYSICS Chapter No.9 ATOMIC SPECTRA Test No.2

Physics MCQs 2nd Year Chapter No.9 ATOMIC SPECTRA Test No.2, FSc, Grade 12, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

Chapter No. 09  [Test No.2]
2nd Year
Multiple Choice Questions


Book Name :  PHYSICS
Chapter No. 09 (Test No.2)
Chapter Name : ATOMIC SPECTRA 
Total MCQ from Text Book :  95
Book Version  :

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. Intermediate)
Total Marks : 95
Total Time :   95 minutes




1 / 95

The relation of paschen series is given as:

2 / 95

For pair production, minimum energy of photon must be:

3 / 95

With increasing quantum number the energy difference between in adjacent levels in atoms:

4 / 95

In discharge tube, electricity is conducted by:

5 / 95

The excited states in which the life time of an electron is of the order of 10-3 sec are called:

6 / 95

Population inversion is sustained in the neon gas relative to an energy level of:

7 / 95

Which of the following is the energy required to remove an electron from the second orbit of hydrogen atom? (ionization potential of H. atom =13.6v)

8 / 95

Accroding to uncertainity principle, for hydrogen atom of radius 5 x 10 -11 m, the speed of electron is:

9 / 95

Balmer series lies in:

10 / 95

Life of meta stable of most atoms is about:

11 / 95

When electron in hydrogen atoms jumps from the second orbit to the first orbit, the wavelength of the emitted radiation is ? which of the following will be the wavelength of emitted radiation when electron jump from third to first orbit?

12 / 95

When an electron in an atom goes from a lower to a higher orbit

13 / 95

The difference between soft and hard x-rays is of:

14 / 95

K? -Rays are produced due to tranistion of electrons from:

15 / 95

The radius of hydrogen atom is about:

16 / 95

In Helium-neon laser, red laser light has energy:

17 / 95

In X-Rays tube the accelerating potential appllied at the anode is V0. Which of the following will be the minimum wavelength of the emitted x-rays?

18 / 95

The radius of first Bohr orbit in hydrogen atom is:

19 / 95

In Laser beam, all the photons:

20 / 95

The meta stable state of neon is nearly at:

21 / 95

Which of the following is the energy required (in ev)for ionizing an excited hydrogen atom?

22 / 95

The most common type of lasers used in physics laboratries are:

23 / 95

Which of the following is the K.E of electron that is is accelerated through a potential of 100v

24 / 95

In an X-Ray tube, the intensity of emitted X-Rays beam is increased by:

25 / 95

In Helium-neon laser, generated red light laser has the wavelength:

26 / 95

If V is accelerating voltage then which of the following will be the maximum frequency of emitted X-Rays form X-Rays tube?

27 / 95

Which of the following is the relation between energy (E) and momentum (P) of a photon?

28 / 95

In Helium-neon laser, laser light generated has the colour:

29 / 95

Photon emitted in inner shell transition are:

30 / 95

The radius of 10th orbit in hydrogen atom is:

31 / 95

The life time of most excited state atoms is about:

32 / 95

The value of radius of 1st Bohr's orbit:

33 / 95

The common door bell requires a voltage of about:

34 / 95

Laser is a beam of light, which is:

35 / 95

In hydrogen atom electron jumps from the first orbit to second orbit, its radius

36 / 95

The maximum uncertainity in the measurement of positron of an electron inside the nucleus is of the order of:

37 / 95

Atom is nearly:

38 / 95

Laser emitted by laser device has:

39 / 95

Emission of photon of energy hf = E2-E1 in any arbitrary direction is:

40 / 95

A potential difference of 42000 V is used in an X-Rays tube to acclerate electrons. Which of the following is the maximum frequency of the emitted x-rays?

41 / 95

The value of Rydberg's Constant is:

42 / 95

Balmer Series lies in:

43 / 95

Production of X-Rays is the reverse process of:

44 / 95

In helium-Neon laser, discharge tube is filled with Neon gas:

45 / 95

Production of X-Rays is the reverse process of:

46 / 95

The maximum number of electrons in the Bohr orbit can be

47 / 95

Which of the following is the frequency of the series limit of Balmer series of hydrogen atom in terms of Rydberg constant R and velocity of Light C?

48 / 95

Which of the following is the ratio of K.E. to the P.E of the electron in any Bohr orbit of hydrogen atom?

49 / 95

Meta stable state is:

50 / 95

Hydrogen atom does not emit X-Rays because

51 / 95

Which of the following is the dimensional formula of Rydberg's constant

52 / 95

Atom can reside in metastable state for:

53 / 95

Laser principle are of _____________ kinds

54 / 95

Which of the following is the ratio of the energies of hydrogen atom in its first to second exceited state?

55 / 95

The life time of meta stable is:

56 / 95

The following gas was identified in the sun using spectoscopy:

57 / 95

Life time of excited states (meta stable) is:

58 / 95

In electronic transition , atom cannot emit:

59 / 95

Which of the following series of hydrogen spectrum lies in ultra violet region

60 / 95

Which of the following is the value of principle quantum number of an ionized atom

61 / 95

Hydrogen atom spectrum does not lie in:

62 / 95

The ratio of minimum to maximum wavelength in Balmer's series is:

63 / 95

Production of X-Rays can be regarded as the inverse of:

64 / 95

Laser beam can be used to generate three dimensional images of objects in a process called:

65 / 95

If electron in hydrogen atom jumps from third orbit to second orbit the emitted radiation has wavelength (R is Rydberg's constant):

66 / 95

Gases begin to conduct electricity at low pressure because:

67 / 95

The speed of electron in the nth orbit is given as:

68 / 95

If V1 is the speed of electron in first orbit of hydrogen atom then velocity of the electron in 4th orbit will be Rydberg constant R and velocity of light C?

69 / 95

Helium-neon laser, discharge tube contains helium:

70 / 95

Laser is the acronym of:

71 / 95

If electron jumps from second orbit to first orbit in hydrogen atom it emots photon of:

72 / 95

When electron jumps from fourth orbit to the second orbit, one gets the:

73 / 95

An excited atom can reside in a meta stable state for:

74 / 95

Balmer Series lies in:

75 / 95

The equation of Rydberg constant is given by:

76 / 95

In a electronic transition atom cannot emit:

77 / 95

X-Rays are maximum absorbed by:

78 / 95

Production of X-Rays can be regarded as the inverse of:

79 / 95

Laser has use in:

80 / 95

Which is not characteristic of Laser:

81 / 95

Helium-neon laser, discharge tube contains neon:

82 / 95

The intensity of X-Rays from a Coolidge tube is plotted against wavelength ? as shown in the figure. The minimum wavelength found is ?c and the wavelength of the K? line is ?k As The accelerating voltage is increased:

83 / 95

Laser can be made by creating:

84 / 95

Helium and neon have nearly identical:

85 / 95

Electrons of mass m and charge e are accelerated through a potential difference V and strike the target of ray tube. Which of the following is the maximum speed of these electrons?

86 / 95

An electron can never by found:

87 / 95

Laser can only be produced if an atom is in its:

88 / 95

The size of the nucleus of an atom (i.e. diameter of the nucleus) is the order of:

89 / 95

The meta stable state of Helium is nearly at:

90 / 95

The shortest wavelength of X-Rays emitted from X-Rays tube depends on the:

91 / 95

The dimensions of Planck's Constant is same as that of:

92 / 95

For which of the following transition infrared radiation will be obtained:

93 / 95

The incident photon is absorbed by an atom in the ground state (E1) thereby leaving the atom in the excited state (E2) is called:

94 / 95

In three phase voltage across any two lines is a:

95 / 95

Helium-neon laser discharge tube contains neon:

Your score is

The average score is 26%


All Candidates / Students which completed F.Sc. (Pre-Medical or Pre-Engineering Exams) with Excellent Score and seeking for Preparation of Any Exams for Job Test or Entrance Test in Medical or Engineering Universities and Colleges, They Will find the Sample Papers , Sample Test on this page. All Preparation Material for PMC (Pakistan Medical Commission), ECAT (Engineering College Admission Test) or For MDCAT (Medical and Dental College Admission Test are free of Cost. All Students will able to download or allow to save in Pdf format or E Book. The Study Material from F.Sc. Textbooks. These Online Quiz in form of Question Answers. We try to present the Multiple Choice Questions in Best form and Chosen from Past Board and MDCAT old Papers.  We make a best selection of MCQs (Multiple Choice Questions) with Questions and Answers for Admission Test on our website. All These MCQs are authentic and taking after our Verification of our Audit Teams from different areas of the World. These Thousands of MCQs cover different Topics on PHYSICS Part-2. These MCQs are best for Second Year Students. If they feel than they inform to other 12th Class Students to help them. All These MCQs (Multiple Choice Questions) are Chapter wise and downloadable in pdf format. In this Chapter we cover the Quiz/Exams about PHYSICS 2nd  Year Chapter No. 3 Test No.2 ELECTROMAGNETISM.

2nd Year PHYSICS notes and MCQs are according to latest Paper Pattern of Punjab Boards, All Exercises in Textbooks are solved to ensure the Quality Education to Medical College Students. All MCQs are according to UHS (University of Health Sciences) Lahore approved Syllabus.

Job Seeking Candidates use for CSS (Central Superior Service) , FPSC (Federal Public Service Commission Islamabad) , PPSC (Punjab Public Service Commission) , SPSC(Sindh Federal Public Service Commission) , KPPSC(Khyber-Pakhtunkhwa Public Service Commission) , BPSC ( Balochistan Public Service Commission) , UPSC (Union Public Service Commission) , PCS (Punjab Civil Services Exam) , IBPS (The Institute of Banking Personnel Selection) , UPPSC(UTTAR PRADESH PUBLIC SERVICE COMMISSION PRAYAGRAJ ) ,

In India IAS exam (officially known as the Civil Services Examination) is organized and conducted by the Union Public Service Commission (UPSC)

These PHYSICS 1ST YEAR MCQs are best for different departments like Railway, Banking , Education (Schools and Colleges),Electricity(WAPDA) or in any Private Industry.

Explanation and Solution of all past papers in this online Practice Test with Examples leads the Candidates towards Success in Interviews

Dear Student If you feel any error in any MCQ then contact us on this Email : 786times.com@gmail.com (administrator) OR Write in Comments….


*Simple and easiest way to display MCQs.
*on refresh website page,each question and Answer shuffle in MCQs.
*Time Limit is display for each test.
*no login and password required for test.
*each query entertained online via email or WhatsApp.
*score card Display.
*correct answer display at end of each question(if you wrong answered).
*Complete list of Question numbers in cells(blocks) e.g. 1, 2 , 3 ….
*Red cells show your wrong answers.
*Green cells shows correct Answers.
*Your obtained RESULT Percentage show after each Questions.
*Use your computer LAB & Internet to increase ability of STUDENTS.

Go to Previous Page for Choose Chapter