Examsnet
Unconfined exams practice
Home
Exams
Banking Entrance Exams
CUET Exam Papers
Defence Exams
Engineering Exams
Finance Entrance Exams
GATE Exam Practice
Insurance Exams
International Exams
JEE Exams
LAW Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
Medical Entrance Exams
Other Entrance Exams
Police Exams
Public Service Commission (PSC)
RRB Entrance Exams
SSC Exams
State Govt Exams
Subjectwise Practice
Teacher Exams
SET Exams(State Eligibility Test)
UPSC Entrance Exams
Aptitude
Algebra and Higher Mathematics
Arithmetic
Commercial Mathematics
Data Based Mathematics
Geometry and Mensuration
Number System and Numeracy
Problem Solving
Board Exams
Andhra
Bihar
CBSE
Gujarat
Haryana
ICSE
Jammu and Kashmir
Karnataka
Kerala
Madhya Pradesh
Maharashtra
Odisha
Tamil Nadu
Telangana
Uttar Pradesh
English
Competitive English
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Careers
Contact Us
Our Apps
Privacy
Test Index
JEE Advanced Model Paper 11 with solutions for online practice
Show Para
Hide Para
Share question:
© examsnet.com
Question : 4
Total: 60
A photon beam containing various energies is passed through a sampleof H - atoms in ground state. Another photon beam containing various energies ispassed through a sample of
L
i
2
+
ions in ground state. The two photon beams arenon – identical .Assume that excitation of electrons takes place in a single step to different energy levels, but de – excitation takes place in several possible steps toground state. Let
x
1
and
z
2
be the number of dark lines in the absorption spectra ofH - atoms and
L
i
2
+
ions respectively and
y
1
and
y
2
be the number of bright lines inthe emission spectra of H - atoms and
L
i
2
+
ions respectively. If
x
1
+
x
2
= 15 , then the minimum value of
y
1
+
y
2
= 14N + 8. What isN?
Your Answer:
Validate
Solution:
8
C
2
+
9
C
2
= 64
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
Prev Question
Next Question