Question

speed of a light in SI unit is 3×10^8 in a new system unit of length is a km and unit of time is b second ,then sped of light in new system of unit is ?
a ) b/a .10^5 b) b/3a . 10^5
c) 3a/b . 10^5 d) 3b/a. 10^5 ​

Answer 1

=3×10^8
=3×10^5×10^3
(10^3=K)
=3×10^5 Km/s