Two Flat Planes of Glass Are Laid on Top of One

question 129

Multiple Choice

Two flat planes of glass are laid on top of one another. The upper plane is slightly raised due to the insertion of a thin piece of paper at one end and an air wedge is thus formed. Light of wavelength 500 nm is normally incident on the glass from above and interference fringes are observed by reflection with 2.5 fringes per cm. Calculate the angle of the wedge.

• A) 6.3 × 10^-5 deg
• B) 1.8 × 10^-3 deg
• C) 4.0 × 10^-4 deg
• D) 3.6 × 10^-3 deg
• E) 5.7 × 10^-4 deg

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Definitions:

Biomedical Therapy

Treatment for psychological disorders that involves influencing brain chemistry, typically through drugs, surgical procedures, or similar medical interventions.

Anxiety Disorders

Psychological disorders characterized by distressing, persistent anxiety or maladaptive behaviors that reduce anxiety.

Free Association

A psychoanalytic process in which the patient speaks freely to reveal the unconscious thoughts and feelings that might be causing psychological distress.

Sigmund Freud

An Austrian neurologist and the founder of psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst.