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A wavelength of 400 nm of electromagneti...

A wavelength of 400 nm of electromagnetic radiation corresponds to

A

frequency `(v)= 7.5xx 10^14` Hz

B

wave number `(barv)= 2.5xx 10^6 m^(-1)`

C

momentum of photon `=1.66xx 10^(-27) kg ms^(-1)`

D

all are correct values

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