match the column. 1)a¹ 2) a° 3) a-*m options are 1) 1 2) a 3) q*m 4)1/a*m
Answers
12th
Physics
Current Electricity
Electrical Resistance & Resistivity
Match the Column I with Col...
PHYSICS
Match the Column I with Column II.
Column I
(Physical quantity) Column II
(Dimensional formula)
(A) Premittivity of free space (p) [M
0
L
0
T
−1
]
(B) Radiant flux (q) [ML
3
T
−3
A
−2
]
(C) Resistivity (r) [ML
2
T
−3
]
(D) Hubble constant (s) [M
−1
L
−3
T
4
A
2
]
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ANSWER
Permittivity of free space
=
4π×electricalforce×distance
2
Charge×charge
[ε
0
]=
[MLT
−2
][L]
2
[AT][AT]
=[M
−1
L
−3
T
4
A
2
]
A - s
Radiant flux =
Time
Energyemitted
=
[T]
[ML
2
T
−2
]
=[ML
2
T
−3
]
B - r
Resistivity = Resistance×AreaLengthLength
[ρ]=
[L]
[ML
2
T
−3
A
−2
[L
2
]
=[ML
3
T
−3
A
−2
]
C - q
Hubble constant =
Distance
Recessionspeed
=
[L]
[LT
−1
]
=[M
0
L
0
T
−1
]
D - p
