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Byju's Answer
Standard XII
Physics
Dimensional Analysis
Multiple Corr...
Question
Multiple Correct Answers Type
Which of the following pairs have the same dimensions?
A
h
/
e
and magnetic flux
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B
h
/
e
and electric flux
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C
Electric flux and
a
/
ϵ
0
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D
Electric flux and
μ
0
I
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Solution
The correct options are
A
h
/
e
and magnetic flux
C
Electric flux and
a
/
ϵ
0
[
h
]
=
[
J
o
u
t
e
×
s
e
c
o
n
d
]
=
[
M
L
2
T
−
1
]
[Magnetic flux]
=
[Magnetic field
×
Area]
⇒
[
ϕ
]
=
[
M
T
A
−
1
]
[
L
2
]
⇒
[
ϕ
]
=
[
M
L
2
T
A
−
1
]
And
[
h
e
]
=
[
M
L
2
T
−
1
A
T
]
=
[
M
L
2
T
−
2
A
−
1
]
[Electric flux]
=
[
E
]
[
A
]
=
[
E
q
]
[
A
]
⇒
[Electric flux]
=
[
F
I
T
]
[
A
]
=
[
M
L
T
−
2
]
[
L
2
]
A
T
=
[
M
L
3
T
−
3
A
−
1
]
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