christineachord christineachord

04-05-2021
Physics

contestada

help FAST !15 pts!

What is needed to build a laser?

A. a concave lens and a convex lens that are fully reflective.
B. Two partially reflective mirrors
C. Two fully reflective mirrors
D. A partially reflective mirror and a fully relfective mirror.

Respuesta :

murphyautumn456 murphyautumn456

04-05-2021

i believe a but none sound like they’d build a laser

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manman200216 manman200216

04-05-2021

Answer:

I believe it is A but I'm not sure

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