Answer:
4 number answer is correct.
Explanation:
A solid state laser contains a cavity like structure fitted with spherical mirrors or plane mirrors at the end filled with a rigidly bonded crystal. It uses solid as the medium. It uses glass or crystalline materials.
It is known that active medium used for this type of laser is a solid material. This lasers are pumped optically by means of a light source which is used as a source of energy for the laser. The solid materials gets excited by absorbing energy in the form of light from the light source. Here the pumping source is light energy.
Snap rings, and bearings can be used to keep a gear on a shaft, hope this helps!!
Answer:
6.9
Explanation:
I had the same question lol your welcomr if itd not right in sorry