Question

please give answer this question



plz don't span❌❌☝️​

Answer 1

Answer:

hope helps you ♛┈⛧┈┈•༶༶•┈┈⛧┈♛

Answer 2

Answer:

When applied to the propagation of light waves, this principle states that: Every point on a wave-front may be considered a source of secondary spherical wavelets which spread out in the forward direction at the speed of light.