ExamPlay Light Logo
Увійти

Physics for IGCSE & O level - Rays And Waves (Section 1 - No. 33)

What is the speed of light in a vacuum?
100,000 km/s
200,000 km/s
300,000 km/s
400,000 km/s

Пояснення

The speed of light in a vacuum is approximately 300,000 km/s.

Коментарі (0)

Оголошення