A Metallic Sheet Has a Large Number of Parallel Slits,5

question 30

Multiple Choice

A metallic sheet has a large number of parallel slits,5.0 mm wide and 20 cm apart.This sheet is used as a diffraction grating for microwaves.A wide parallel beam of microwaves is incident normally on the sheet.If the intensity maxima occur 2.0° apart in the central region,what is the wavelength of the microwaves?

• A)5.0 mm
• B)6.0 mm
• C)7.0 mm
• D)8.0 mm
• E)9.0 mm

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Definitions:

Penis Envy

In psychoanalytic theory, a supposed envy that females feel towards males, theorized by Freud to stem from the realization that they do not have a penis, leading to feelings of inferiority.

Superego

The part of the human psyche in Freudian psychoanalysis that acts as a self-critical conscience, reflecting social standards learned from parents and teachers.

Free Association

A psychoanalytic technique where the patient is encouraged to relay thoughts and feelings without censorship as they come to mind, leading to insights into unconscious processes.

Represses Hostility

The psychological act of suppressing aggressive feelings or thoughts consciously or unconsciously.