Physics for IGCSE & O level - Rays And Waves (Section 9 - No. 26)
Which of these statements are correct in respect to light?
Light carries energy.
Light can travel through a vacuum.
Light always travels in a straight line.
Light has a constant speed.
คำอธิบาย
Light carries energy, can travel in a vacuum, and travels in a straight line and has a constant speed.