A Projector Lens Is Needed to Form an Image on a Screen

question 66

Multiple Choice

A projector lens is needed to form an image on a screen 6 times the size of its corresponding object.The screen is located 8.65 m from the lens.What is the required focal length of the lens?

• A)1.44 m
• B)7.41 m
• C)1.24 m
• D)0.721 m
• E)1.73 m

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Definitions:

Psychodynamic Therapy

A therapeutic approach aiming to explore the psychological forces that underlie human behavior, feelings, and emotions, often focusing on the impact of the unconscious.

Systematic Desensitization

A therapeutic technique in behavioral therapy used to help patients overcome phobias and anxiety disorders by gradually exposing them to the object of their fear in a controlled environment.

Cognitive Therapy

A form of psychotherapy that emphasizes the importance of challenging and changing unhelpful thoughts and beliefs to treat mental disorders.

Humanistic Therapists

Practitioners who adopt a client-centered approach, focusing on individual potential and emphasizing the importance of self-actualization and personal growth.