Two Slits in an Opaque Barrier Each Have a Width

question 63

Multiple Choice

Two slits in an opaque barrier each have a width of 0.020 mm and are separated by 0.050 mm.When coherent monochromatic light passes through the slits the number of interference maxima within the central diffraction maximum:

• A)is 1
• B)is 2
• C)is 4
• D)is 5
• E)cannot be determined unless the wavelength is given

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Definitions:

Therapsids

A group of mammal-like reptiles of the Permian period; gave rise to the mammals.

Chordates

A large phylum of animals that includes all vertebrates as well as several closely related invertebrates, characterized by the presence of a notochord at some stage of their development.

Monotremes

Egg-laying mammals, such as the platypus and echidna, representing a unique branch of the mammalian tree.

Parthenogenesis

The development of an unfertilized egg into an adult organism; common among honeybees, wasps, and certain other arthropods.