Light travels at a speed of _________.
A. 3,00,000 km/s
B. 4,00,000 km/s
C. 5,00,000 km/s
D. 6,00,000 km/s
Answer:A
Light travels at a speed of _________.
A. 3,00,000 km/s B. 4,00,000 km/s C. 5,00,000 km/s D. 6,00,000 km/s