More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Physics Fsc Part 2 Chapter 9 Online Test MCQs With Answers
Question # 1
The process by which lesser beam can be used to generate 3-dimensional images of objects is called
Choose an answer
Holography
Geo graphy
Tomography
Radio graphy
Previous
Skip
Next
Question # 2
A° is the unit of:
Choose an answer
Energy
Length
Nuclear energy
Work
Previous
Skip
Next
Question # 3
The rest mass x ray photon is
Choose an answer
Infinite
Zero
1.67 X
-17
kg
All of the above
Previous
Skip
Next
Question # 4
In according with Bohr's theory the K.E of the electron is equal to:
Choose an answer
ke
2
/2r
Ze
2
/r
Ze
2
/r
2
Ze
2
/2r
2
Previous
Skip
Next
Question # 5
An electron in H -atom is excited from ground state n=4 , How many spectral lines are possible in this case.
Choose an answer
6
5
4
3
Previous
Skip
Next
Question # 6
Frequency of x-rays depends upon.
Choose an answer
Number of electrons striking target
Accelerating potencial
Nature of the target
Both B and C
Previous
Skip
Next
Question # 7
If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be
Choose an answer
136.0 volt
3.0 volt
13.6 volt
None of these
Previous
Skip
Next
Question # 8
The following gas was identified in the sun using spectroscopy
Choose an answer
Hydrogen
Helium
Carbon
Nitrogen
Previous
Skip
Next
Question # 9
The temperature of core of nuclear reactor is:
Choose an answer
1100°C
1200°C
1300°C
1400°C
Previous
Skip
Next
Question # 10
In an electronic transition atom cannot emit.
Choose an answer
Infrared radiations
Visible radiations
Ultraviolet radiations
Gama radiations
Previous
Skip
Next
Question # 11
Helium Neon Laser Beam emitted from discharge tube has a colour.
Choose an answer
Blue
Green
Red
Black
Previous
Skip
Next
Question # 12
For Paschen series, the value of 'n' starts from
Choose an answer
2
4
6
8
Previous
Skip
Next
Question # 13
The velocity of electron moving is 1st orbit of hydrogen atom is:
Choose an answer
2.09 x 10
6
ms
-1
2.18 x10
6
ms
-1
2.19 x 10
6
ms
-1
3.18 x10
6
ms
-1
Previous
Skip
Next
Question # 14
Reflecting mirrors in laser is used to
Choose an answer
Further stimulation
For producing more energetic lasers
Both (a) and (b)
None of these
Previous
Skip
Next
Back