12th Class PHYSICS Online Quiz Chapter No.9 ATOMIC SPECTRA

Physics MCQs 2nd Year Chapter No.9 ATOMIC SPECTRA Test No.1, 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 Name : ATOMIC SPECTRA 
Chapter No.9  [Test No.1]
2nd Year
Multiple Choice Questions


Book Name :  PHYSICS
Chapter No. 9 (Test No.1)
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 value of Rydberg's Constant RH is:

2 / 95

The separation of ordinary whtie light into its components by the use of prism or grating is called:

3 / 95

The radiation emitted from hydrogen filled discharge tube shows:

4 / 95

J.R. Rydberg obtained a formula to describe the wavelength of the hydrogen atom in:

5 / 95

Which of the following is the spectral series of atomic hydrogen?

6 / 95

When an electron jumps from higher energy orbit to lower energy orbit, the difference of encergy appears in the form of:

7 / 95

Balmer empirical formula explain the electromagnetic radiations of any excited atom is in terms of their:

8 / 95

X-Rays were discovered in 1895 by:

9 / 95

X-Rays are electromagnetic wave having wavelength in the range of:

10 / 95

The energy required to completely remove an electron from the atom is called:

11 / 95

The diameter of the atom is the order of:

12 / 95

In the state n = ? of hydrogen atom, total energy of electron is:

13 / 95

One Widely used system is computerized axial tomography is called:

14 / 95

The velocity of moving electron in nth orbit is given by the relations:

15 / 95

Total energy of an electron in an orbit around the nucleus is:

16 / 95

The wavelength of Lyman series for hydrogen spectrum lies in the:

17 / 95

The potential required to lift an electron from ground state to higher energy state is called:

18 / 95

The total energy of the electron in the nth orbit of hydrogen atom can also be written as:

19 / 95

X-Rays are similar in nature to:

20 / 95

Balmer series contains the wavelength in the:

21 / 95

If the nummber of electrons hitting the target in the x-tube increases, then the intensity of the X-Rays:

22 / 95

X-Ray diffraction reveals that they are:

23 / 95

Radiation with wavelength greater than red light is called:

24 / 95

The transition of electrons between the various shells give rise to:

25 / 95

Which of the following is an example of continuous spectra?

26 / 95

The P.E. of an electron revolving at a distance rn from the nucleus is:

27 / 95

The radius of the third Bohr orbit in hydrogen atom is greater than the radius of the first orbit by a factor of:

28 / 95

The line spectrum of hydrogen atom contains the spectral lines in the region:

29 / 95

The spectrum of visible sun light ranges from:

30 / 95

With increasing orbit number(n) the energy difference between adjacent levels in atoms:

31 / 95

The type of spectra produced by atom is:

32 / 95

The emissions of photons by a metal when electrons are incident is called:

33 / 95

Bohr's atomic model of hydrogen atom was proposed by Bohr in:

34 / 95

If an electron jumps from lower to higher orbit it will:

35 / 95

According to Bohr Atomic Model, the angular momentum of electron in an orbit equal to an integral multiple of:

36 / 95

X-Rays cannot produce pair production because:

37 / 95

Which of the phenomenon can be studied with X-Rays

38 / 95

The branch of physics which deals with the investigation of wavelength and intensities of elctromagnetic radiation emitted or absorbed by atoms is called:

39 / 95

X-Rays can:

40 / 95

The SI unit of Rydberg constant is:

41 / 95

In X-Rays producing arrangement, target is made of:

42 / 95

The wave length of shortest wave length inLyman series is equal to:

43 / 95

The scientist who studied the wavelength of all lines of the hydrogen spectrum in visible region was:

44 / 95

The spectral series were identified in the spectrum of hydrogen by:

45 / 95

X-Rays are affected by:

46 / 95

The reverse process of photoelectric effect is called

47 / 95

X-Rays are:

48 / 95

The potential required to lift an electron from ground state to excited state is called:

49 / 95

The radius of nth orbit of hydrogen atom can be given by:

50 / 95

The continuous X-Rays spectrum is due to an effect known as:

51 / 95

The speed of the electron in the first Bohr orbit is:

52 / 95

An is equal to:

53 / 95

K? characteristics X-Rays are produced due to the transition of the electrons:

54 / 95

The total energy of an electron remains constant:

55 / 95

Brackett and Pfund series of spectral lines lies in the:

56 / 95

The total energy of an electron revolving in the second orbit is:

57 / 95

When electron in hydrogen atom jumps from higher orbit into second orbit, the set of lines emitted is called

58 / 95

In the spectrum of which of the following will you find Balmer series:

59 / 95

Lyman series contains the wavelength given by the forumula:

60 / 95

The magnitude of ionization of hydrogen is:

61 / 95

Balmer series contains the wavelength given by the formula:

62 / 95

The velocity of X-Rays is equal to that of:

63 / 95

The total energy of the electron in nth orbit of hydrogen atom around the nucleus is given by:

64 / 95

The continuous X-Rays spectrum is obtained due to:

65 / 95

Which of the following is an example of band spectra?

66 / 95

The energy of X-Rays depends upon:

67 / 95

Which of the following radiation will burn human skin?

68 / 95

Pfund series contains the wavelength given by the forumula:

69 / 95

CAT stands for:

70 / 95

The relation between Rydberg constant(RH) and ground state energy (En) is given by the relation:

71 / 95

X-Rays exhibit the phenomenon of:

72 / 95

When an electron exists in its lowest state, it is called:

73 / 95

The first spectral series in the spectrum of hydrogen atom was identified by Balmer in:

74 / 95

The energy of the 4th orbit in hydrogen atom is:

75 / 95

When electron in hydrogen atom jumps from higher orbit into fifth orbit, the set of lines emitted is called

76 / 95

Total energy of an electron in an orbit around the nucleus is the sum of:

77 / 95

When electron abosrbs some energy, it jumps to:

78 / 95

Which of the following is an example of line spectra?

79 / 95

If the ionization energy of hydrogen atom is 13.6eV, the ionization potential will be:

80 / 95

A X-Rays Photon produced due to transition of electron from M-Shell to K-Shell is called:

81 / 95

The penetrating power of X-Rays depends on their:

82 / 95

En-Ep = hf, where hf is the energy of:

83 / 95

Which of the following shell is closest to nucleus

84 / 95

CAT-scans can be used to detect tumors in:

85 / 95

X-Rays and gamma rays of the same wavelength and intensity can be differentiated by observing:

86 / 95

When electron in hydrogen atom jumps from higher orbit into first orbit, the set of lines emitted is called

87 / 95

According to 3rd postulate of Bohr's theory

88 / 95

The rest mass of X-Rays Photon is:

89 / 95

After the emission of X-Rays, the atom of the target is:

90 / 95

Electrostatic force between the electron and the nucleus of hydrogen atom is given by:

91 / 95

The numerical value of ground state energy for hydrogen atom is:

92 / 95

Ionization energy of Hydrogen atom m first exited stated is:

93 / 95

The radius of 1st Bohr's orbit for hydrogen atom is:

94 / 95

X-Rays eject electrons from matter by:

95 / 95

X-Rays can cause:

Your score is

The average score is 52%


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