Q. The density of a material in SI units is $128 \; kg \; m^{-3}$. In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material is :

Solution:

$\frac{128 kg}{m^{3}} = \frac{125 \left(50g\right)\left(20\right)}{\left(25cm\right)^{3}\left(4\right)^{3}} $
$ = \frac{128}{64} \left(20\right)units $
$ = 40 units $

You must select option to get answer and solution

Questions from JEE Main 2019

Physics Most Viewed Questions

8. The spectrum of an oil flame is an example for ...........

KCET 2010 Dual Nature Of Radiation And Matter