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Byju's Answer
Standard IX
Physics
Simple Pendulum
According to ...
Question
According to Moseleys law the ratio of the slopes of graph between
√
v
and
Z
for
k
β
and
k
α
is:
A
√
32
27
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B
√
27
32
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C
√
33
22
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D
√
22
33
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Solution
The correct option is
A
√
32
27
Moseley's law is given by:
√
f
=
⎷
c
R
(
1
n
2
1
−
1
n
2
2
)
(
z
−
b
)
where f is frequency
c is speed of light
R is Rydberg constant
For the K-series, b=1
For
K
α
:
n
1
=1 and
n
2
=2
For
K
β
:
n
1
=1 and
n
2
=3
∴
F
o
r
K
α
=
√
f
=
√
c
R
(
1
−
1
4
)
(
z
−
1
)
=
√
c
R
(
3
4
)
(
z
−
1
)
∴
F
o
r
K
β
=
√
f
=
√
c
R
(
1
−
1
9
)
(
z
−
1
)
=
√
c
R
(
8
9
)
(
z
−
1
)
∴
R
a
t
i
o
o
f
s
l
o
p
e
s
=
⎷
8
9
c
R
⎷
3
4
c
R
=
√
32
27
Suggest Corrections
0
Similar questions
Q.
If a =
2
3
×
3
3
×
7
2
and
b
=
2
2
×
3
2
×
5
3
,
which is true?
Q.
The marks obtained by
19
students of a class are
27
,
36
,
22
,
31
,
25
,
26
,
33
,
24
,
37
,
32
,
29
,
28
,
36
,
35
,
27
,
26
,
32
,
35
and
28
. Find the upper quartile.
Q.
Study the following table and answer the questions that follow.
S
u
b
j
e
c
t
s
A
n
i
l
I
I
I
I
I
I
I
V
V
M
a
t
h
s
42
32
47
22
37
D
I
32
42
27
32
22
V
A
37
27
17
32
42
R
e
a
s
o
n
i
n
g
47
49
34
41
39
E
n
g
l
i
s
h
26
30
38
41
45
B
a
r
u
n
M
a
t
h
s
32
22
37
47
42
D
I
27
47
32
39
30
V
A
35
29
42
36
28
R
e
a
s
o
n
i
n
g
44
45
42
45
47
E
n
g
l
i
s
h
32
30
39
36
33
C
h
a
m
a
n
M
a
t
h
s
33
34
37
44
39
D
I
44
42
35
42
38
V
A
36
43
42
40
39
R
e
a
s
o
n
i
n
g
26
37
46
34
35
E
n
g
l
i
s
h
27
29
35
35
43
D
h
a
n
n
u
M
a
t
h
s
29
36
37
42
43
D
I
33
39
37
29
31
V
A
44
45
39
49
45
R
e
a
s
o
n
i
n
g
31
36
48
43
43
E
n
g
l
i
s
h
35
38
36
41
45
E
l
l
a
M
a
t
h
s
35
34
43
45
46
D
I
47
33
44
39
47
V
A
47
44
39
43
42
R
e
a
s
o
n
i
n
g
39
37
36
42
43
E
n
g
l
i
s
h
32
33
38
41
44
What was the total of the marks of Anil in V A in all the concise tests?
Q.
Study the following table (Table 1.5 ) and answer the questions given below that.
S
u
b
j
e
c
t
s
A
n
i
l
I
I
I
I
I
I
I
V
V
M
a
t
h
s
42
32
47
22
37
D
I
32
42
27
32
22
V
A
37
27
17
32
42
R
e
a
s
o
n
i
n
g
47
49
34
41
39
E
n
g
l
i
s
h
26
30
38
41
45
B
a
r
u
n
M
a
t
h
s
32
22
37
47
42
D
I
27
47
32
39
30
V
A
35
29
42
36
28
R
e
a
s
o
n
i
n
g
44
45
42
45
47
E
n
g
l
i
s
h
32
30
39
36
33
C
h
a
m
a
n
M
a
t
h
s
33
34
37
44
39
D
I
44
42
35
42
38
V
A
36
43
42
40
39
R
e
a
s
o
n
i
n
g
26
37
46
34
35
E
n
g
l
i
s
h
27
29
35
35
43
D
h
a
n
n
u
M
a
t
h
s
29
36
37
42
43
D
I
33
39
37
29
31
V
A
44
45
39
49
45
R
e
a
s
o
n
i
n
g
31
36
48
43
43
E
n
g
l
i
s
h
35
38
36
41
45
E
l
l
a
M
a
t
h
s
35
34
43
45
46
D
I
47
33
44
39
47
V
A
47
44
39
43
42
R
e
a
s
o
n
i
n
g
39
37
36
42
43
E
n
g
l
i
s
h
32
33
38
41
44
The average percentage of marks obtained by Dhannu in Maths in five concise tests was exactly equal to the average percentage of marks obtained by Chaman in five concise tests in which of the following sections?
Q.
Study the following table and answer the questions given below that.
S
u
b
j
e
c
t
s
A
n
i
l
I
I
I
I
I
I
I
V
V
M
a
t
h
s
42
32
47
22
37
D
I
32
42
27
32
22
V
A
37
27
17
32
42
R
e
a
s
o
n
i
n
g
47
49
34
41
39
E
n
g
l
i
s
h
26
30
38
41
45
B
a
r
u
n
M
a
t
h
s
32
22
37
47
42
D
I
27
47
32
39
30
V
A
35
29
42
36
28
R
e
a
s
o
n
i
n
g
44
45
42
45
47
E
n
g
l
i
s
h
32
30
39
36
33
C
h
a
m
a
n
M
a
t
h
s
33
34
37
44
39
D
I
44
42
35
42
38
V
A
36
43
42
40
39
R
e
a
s
o
n
i
n
g
26
37
46
34
35
E
n
g
l
i
s
h
27
29
35
35
43
D
h
a
n
n
u
M
a
t
h
s
29
36
37
42
43
D
I
33
39
37
29
31
V
A
44
45
39
49
45
R
e
a
s
o
n
i
n
g
31
36
48
43
43
E
n
g
l
i
s
h
35
38
36
41
45
E
l
l
a
M
a
t
h
s
35
34
43
45
46
D
I
47
33
44
39
47
V
A
47
44
39
43
42
R
e
a
s
o
n
i
n
g
39
37
36
42
43
E
n
g
l
i
s
h
32
33
38
41
44
In which of the following concise tests did Ella obtain the highest percentage of marks in Maths?
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