If L and C denote inductance and capacitance,then the dimensions of L-C are
Options
(a) [M⁰L⁰T²] (b) [M²L⁰T²] (c) [M⁰L²T²] (d) [ML²T²]
Correct Answer:
[M⁰L⁰T²]
Explanation:
Dimensions of Inductance(L) = ML²T⁻²A⁻²
Dimensions of Capacitance(C) = M⁻¹L⁻²T⁴A²
Van der waals,equation of state is(p+a/v²)(V-b)=nRT. The dimensions of a and b are
Options
(a) [ML³T²],[ML³T⁰] (b) [ML⁵T⁻²],[M⁰L³T⁰] (c) [M²LT²],[ML³T²] (d) [ML²T],[ML²T²]
Correct Answer:
[ML⁵T⁻²],[M⁰L³T⁰]
Explanation:
((p+a/v²)(V-b)) / nT =R
Since we have (p+a/v²), […]
If the dimensions of a physical quantity are givenby Mᵃ Lᵇ Tᶜ, then the physical quantity will be:
Options
(a) Velocity if a= 1, b = 0, c = – 1 (b) Acceleration […]
Young’s modulus of the material of a wire is 18 x 10¹¹ dyne cm⁻². Its value in SI is
Options
(a) 18 x 10¹⁵ Nm⁻² (b) 18 x 10¹⁰ Nm⁻² (c) 18 x 10⁹ […]
The radius of a ball is(5.2±0.2)cm.The percentage error in the volume of the ball is approximately
Options
(a) 11 % (b) 4 % (c) 7 % (d) 9 %
Correct Answer:
11 %
Explanation: […]
The physical quantity which doesnot have the same dimensions as the other three is
Options
(a) spring constant (b) surface tension (c) surface energy (d) acceleration due to gravity
Correct Answer:
acceleration due […]
The ratio of the dimensions of Planck’s constant and that of the moment of inertia is the dimensions of
Options
(a) frequency (b) velocity (c) angular momentum (d) time
Correct Answer:
frequency
Explanation:
The dimensional […]
If force(F),velocity(v) and time(T) are taken as fundamental units, then the dimensions of mass are
Options
(a) [FvT⁻¹] (b) [FvT⁻²] (c) [Fv⁻¹T⁻¹] (d) [Fv⁻¹T]
Correct Answer:
[Fv⁻¹T]
Explanation:
Force = Mass x Acceleration
F […]
The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field, is:
Options
(a) ML²T⁻² (b) ML⁻¹T⁻² (c) ML²T⁻¹ (d) MLT⁻¹
Correct Answer:
ML⁻¹T⁻²
Explanation:
1/2 ?￢ﾂﾀE² represents […]
If force(F),length(L) and time(T) be considered fundamental units, then the units of mass will be
Options
(a) [FLT⁻²] (b) [FL⁻²T⁻¹] (c) [FL⁻¹T²] (d) [F²LT⁻²]
Correct Answer:
[FL⁻¹T²]
Explanation:
Force = Mass x Acceleration [F] […]
2017 Copyright Doctor Dreams Training Academy