Question

Speed of light in s.I system is 3×10 power 8 m/s .In a new system unit of length is a km and unit of time is a second .Then speed of light in new system of unit is

Answer 1

Answer:

3×10^5×b/a

Explanation:

Speed of Light in SI system = 3 × 10^8 m/sec

Light covers a distance of 3 × 10^8 m in 1 sec

Therefore,

It covers in 1 sec

\frac{3 \times {10}^{8} }{a \times {10}^{3} } km

Hence it covers

in b sec

3 \times {10}^{5} \times \frac{b}{a}