A cut-off filter is one which Select one: a. No one of the above. b. Relies on optical interference of radiation to pro

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A cut-off filter is one which
Select one:
a. No one of the above.
b. Relies on optical interference of radiation to provide
relatively narrow bands.
c. Transmits about 100% of incident radiation over a
portion of the visible region but falls rapidly to zero
transmittance over the remainder.
d. Both a and b.