The first laser emitted ∙ a. Pulses of 694 nm red light ∙ b. A continuous red beam ∙ c. Pulses of white light from a helical flash lamp ∙ d. Spontaneous emission

The first laser emitted
∙ a. Pulses of 694 nm red light  
∙ b. A continuous red beam  
∙ c. Pulses of white light from a helical flash lamp  
∙ d. Spontaneous emission
by

1 Answer

Answer :

∙ a. Pulses of 694 nm red light
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