Question

Which one of the following is not a dimensional quantity?Required to answer. Single choice. Efficiency Specific Gravity Refractive index All​

Answer 1

All is the correct answer.

Mark as brainelist

Answer 2

Answer:

refractive index

Explanation:

beacuse

refractive index =

$\frac{angle \: of \: incidence}{angle \: of \: refraction}$

here one quantity cancelled another so it is dimension less quantity

know you are crystal clear