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Online Tests
Ics Part 2 Physics Chapter 9 Test Online MCQs With Answers
Question # 1
The shortest wave length is Bracket series has wave length.
Choose an answer
16/Rn
Rn/16
16 Rn
4 Rn
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Question # 2
The unit of Rh is.
Choose an answer
ms-1
m
m
2
m
-1
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Question # 3
We can find from de Broglie formula
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Wavelength
Amplitude
Speed of wave
Frequency of wave
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Question # 4
Bremsstrahlung radiation are examples of
Choose an answer
Atomic spectra
Molecular spectra
Continuous spectra
Discrete spectra
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Question # 5
The value of Rydberg constant is
Choose an answer
1.0974 x 10
7
m
-1
1.0974 x 10
-7
m
-1
1.0974 x 10
6
m
-1
1.0974 x 10
-6
m
-1
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Question # 6
Earth orbital speed is
Choose an answer
10 km/s
20 km/s
30 km/s
40 km/s
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Question # 7
The rest mass x ray photon is
Choose an answer
Infinite
Zero
1.67 X
-17
kg
All of the above
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Question # 8
Boher proposed his atomic model in:
Choose an answer
1910
1911
1912
1913
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Question # 9
The first orbit in the hydrogen atom has a radius.
Choose an answer
0.53 nm
0.053 nm
0.0053 nm
0.00053 nm
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Question # 10
Study of hydrogen visible spectrum in
Choose an answer
1886
1887
1895
1885
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Question # 11
The line radiations emitted from by hydrogen filled discharge tube can be analyzed into.
Choose an answer
Band spectrum
Line spectrum
Continuous spectrum
Absorption spectrum
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Question # 12
Helium Neon Laser Beam emitted from discharge tube has a colour.
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Blue
Green
Red
Black
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Question # 13
Helium-Neon laser discharge tube contains neon
Choose an answer
82%
15%
25%
85%
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Question # 14
The first laser was built by
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ArthursSchawalow
T.H.Maiman
Peter Sorokin
C.H.Townes
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Question # 15
The value of Rydberg constant is:
Choose an answer
1.0749x10
7
m
-1
1.0974 x 10
7
m
-1
1.974 x10
6
m
-1
1.0974 x 10
-7
m
-1
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Question # 16
In Helium Neon laser, the discharge tube is filled with
Choose an answer
80% He, 20% Neon
85% He, 15% Neon
83% He, 17% Neon
90% He, 10% Neon
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Question # 17
Charge on positron is:
Choose an answer
Negative
Positive
Netural
None of these
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Question # 18
Laser is a device which can produce:
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Intense beam of light
Coherant beam of light
Monochromatic beam of light
All of the above
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