Which of the following is a dimensional constant? | PHYSICS - DIMENSIONS OF PHYSICAL QUANTITIES | SolveeIt

Question

Which of the following is a dimensional constant?

Refractive index

Dielectric constant.

Relative density.

Gravitational constant.

Answer

Refractive index

Explanation

Solution

P = ML⁻¹T⁻²

And, $\frac { \text { Energy } } { \text { volume } }$ = $\left[ \frac { 1 } { 2 } \mathrm { mv } ^ { 2 } / \right.$ volume $] = \frac { \mathrm { ML } ^ { 2 } \mathrm {~T} ^ { - 2 } } { \mathrm {~L} ^ { 3 } }$

= ML⁻¹T⁻²

Hence (1) is correct.

Question: Which of the following is a dimensional constant?...

Solution