Question

66.
The band width of high quality laser is
(a) 1000 A
(b) 10 A
(c) 108 A' (d) 100 A​

Answer 1

Answer:

B is a answer 10A is a right answer

Answer 2

Since typical spectral bandwidths are quite modest by these standards ( < 10 kHz for high-resolution ~H spectra, < 1 MHz for virtually all solids), literally any possible useful waveform can be manufac- tured, essentially at will.

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