A Metal Having a Work Function of 2

question 26

Multiple Choice

A metal having a work function of 2.8 eV is illuminated with monochromatic light whose photon energy is 3.9 eV. What is the threshold frequency for photoelectron production? (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 6.8 × 10¹⁴ Hz
• B) 2.7 × 10¹⁴ Hz
• C) 7.6 × 10¹⁴ Hz
• D) 8.5 × 10¹⁴ Hz
• E) 9.4 × 10¹⁴ Hz

Explain the influence of sociocultural factors on personality and identity.

Understand the historical development of personality theories, including psychoanalytic, trait, and social-cognitive perspectives.

Explain the concept of psychosexual development and its stages as proposed by Freud.

Recognize the contribution of major theorists like Carl Jung, Karen Horney, and Erik Erikson to the field of personality psychology.

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