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Byju's Answer
Standard XII
Physics
Dimensional Analysis
The relation ...
Question
The relation between force 'F' and density 'd' is
F
=
x
√
d
. The dimensions of
x
are
A
[
L
−
1
/
2
M
3
/
2
T
−
2
]
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B
[
L
−
1
/
2
M
1
/
2
T
−
2
]
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C
[
L
−
1
M
3
/
2
T
−
2
]
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D
[
L
−
1
M
1
/
2
T
−
2
]
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Solution
The correct option is
A
[
L
−
1
/
2
M
3
/
2
T
−
2
]
The dimensions of
x
are
[
x
]
=
[
F
]
[
d
]
0.5
=
[
M
L
T
−
2
]
[
M
L
−
3
]
0.5
=
[
M
1.5
L
−
0.5
T
−
2
]
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0
Similar questions
Q.
What are the dimensions of
a
and
b
in the relation
F
=
a
√
x
+
b
t
2
where
F
is force,
x
is distance and
t
is time?
Q.
The dimension of the physical quantity
x
in the equation,
F
=
x
ρ
, where
F
is force and
ρ
is density is given by
Q.
What is the dimensions of
A
B
in the relation
F
=
A
√
x
+
B
t
2
, where
F
is the force,
x
is the distance and
t
is the time?
Q.
Match the following.
List I
List II
A.
Angular momentum
1.
[
M
−
1
L
2
T
−
2
]
B.
Torque
2.
[
M
1
T
−
2
]
C.
Gravitational constant
3.
[
M
1
L
2
T
−
2
]
D.
Tension
4.
M
1
L
2
T
−
1
]
Q.
Let
F
(
x
)
=
∫
x
0
=
2
t
+
1
t
2
−
2
t
+
2
d
t
,
x
∈
[
−
1
,
1
]
then
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