In space communcation , the information can be passed from on place to another at a distance of 100 km in

Options

A. 1 s
B. 0.5 s
C. 0.003 s
D. None of these

Answer

D

Explanation

In space communication , the information can be passed from one place to another with the speed of light ` (c=3 xx 0^(8) ms^(-1))` . Hence , time taken for a distance of ` 100 kkm =(100 xx 10^(3))/( 3 xx 10^(8))=3.3 xx 10^(-4)s `