Which two of the following five physical parameters have

Home » Mechanics » Physical World, Units and Measurements » Question

Which two of the following five physical parameters have the same dimensions?
[2008]
(A)Energy density
(B)Refractive index
(C)Dielectric constant
(D)Young’s modulus
(E)Magnetic field

1. (B) and (D)
2. (C) and (E)
3. (A) and (D)
4. (A) and (E)

Correct Option: C

[Energy density] =	[Work done]
	[Volume]

=	ML²T^-2	= ML^-1T^-2
	L³

[Young's Modulus] =		F	×	l
		A		∆l

=	MLT^-2	.	L	= ML^-1T^-2
	L²		L