Q. In space communication, the information can be passed from one place to another at a distance of 100 km in
A) 1 s
B) 0.5 s
C) 0.003 s
D) None of these
Explanation
(d) In space communication, the information can be passed from one place to another with the speed of light$(c = 3 \times 10^{8}\ ms^{- 1})$. Hence, time taken for a distance of $100\ km = \frac{100 \times 10^{3}}{3 \times 10^{8}} = 3.3 \times 10^{- 4}s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.