1.

State any four important characteristics of Laser ray.

Answer»

Laser ryas (characteristics)-

(i) It is used to produce mono chromatic infra-red ryas.

(ii) Laser of he-Ne produce the infra-red rays of wave-length 3.39 x 10-6 m, 1.19 x 10-6 m and 3.39 x 10-6 m.

(iii) Laser of CO2 produces the infra-red ray of wave length 10.6 x10-6 m



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