Second Year Physics Chapter 20 Online MCQ Test for 2nd Year Physics Chapter 20 Atomic Spectra Preparation

FSC Part 2 Physics
Chapter 20 Test

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Physics FSC Part 2 Chapter 20 Online MCQ's Test

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Question # 1

The radius of 10th orbit in hydrogen atom is.

Question # 2

The shortest wave length is Bracket series has wave length.

Question # 3

In Helium Neon laser, the discharge tube is filled with

Question # 4

The 1st Bohr atom in the hydrogen atom has radius

Question # 5

Balmer series lies in

Question # 6

The energy of 4th Orbit in hydrogen atom is.

Question # 7

Bremsstrahlung radiation are examples of

Question # 8

The rest mass x ray photon is

Question # 9

Life time of metastable states is

Question # 10

The unit of Rh is.

Question # 11

If electron jumps from second orbit to first orbit in hydrogen atom it emits photon of.

Question # 12

Which is not characteristic of Laser.

Question # 13

Electron volt is unit of:

Question # 14

The typical nuclei are less than:

Question # 15

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

Question # 16

Photons emitted in inner shell transition are.

Question # 17

Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.

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FSC Part 2 Physics Chapter 20 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Paschen series lies in the
A. Far ultraviolet region
B. Visible region
C. Ultraviolet region
D. Inferred region
2 1 rem =
A. 0.001 SV
B. 0.01 SV
C. 0.1 SV
D. 1.01 SV
3 The series in visible region is:
A. Balmer series
B. Pfund series
C. Paschen series
D. None of above
4 Energy produced due to fission of uranium atom is:
A. 500MeV
B. 200MeV
C. 700MeV
D. 750MEV
5 Bremsstrahlung radiation are examples of
A. Atomic spectra
B. Molecular spectra
C. Continuous spectra
D. Discrete spectra
6 _____ has the largest de Broglie wavelength at same speed.
A. Proton
B. Alpha particle
C. Carbon atom
D. Electron
7 Electron volt is unit of:
A. Chemical energy
B. Potential energy
C. Nuclear energy
D. heat energy
8 Hydrogen atom spectrum does not lie in
A. Ultraviolet region
B. Visible region
C. Infrared region
D. X ray region
9 X- ray diffraction reveals that these are
A. Particle type
B. Wave type
C. Both wave and particle
D. None of above
10 Which of the following series of hydrogen spectrum lies in ultra violet region.
A. Lyman sereis
B. Paschen series
C. Balmar series
D. Bracket series

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