Question

11. Which of the following physical parameters have the same
dimensions
() Energy density
(W Refractive inder
() Dielectric constant
(iv) Young's modulus
(6) 2 and 4
(1) 3 and
(©) 1 and 4
(1) 1 and 2​

Answer 1

Answer:

Dimensional formula of energy density [u]=ML

−1

T

−2

Dimensional formula of Young's modulus [Y]=ML

−1

T

−2

Dimensional formula of magnetic field [B]=MA

−1

T

−2

Refractive index and dielectric constant are dimensionless.

Thus energy density and Young's modulus have same dimensions.