Physics Mcqs

A. Less than ordinary light
B. More than ordinary light
C. Equal to ordinary light
D. Different for different colours or frequency

A. Further stimulation
B. Lasing more
C. For producing more energetic lasers
D. All

A. Ne only
B. He-Ne both
C. Electrons of He
D. Electrons Ne

A. 10-4 sec
B. 10-5 sec
C. 10-3 sec
D. 10-8 sec

A. Metal stable state
B. Normal state
C. Inverted population
D. All the above