A Lens of Flint Glass Index of Refraction of 1

question 114

Multiple Choice

A lens of flint glass index of refraction of 1.60) has a concave surface with radius 12 cm and a convex surface with radius 10 cm, respectively. The focal length of this lens is

• A) 100 cm,
• B) -100 cm,
• C) 9.1 cm,
• D) -9.1 cm,
• E) 14.5 cm,

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Definitions:

Zygote

The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of human development.

Spermarche

A primary sex characteristic in males; a male’s first production of mature sperm, which signals the ability to reproduce sexually.

Andropause

Andropause describes the gradual decline in testosterone levels and its associated effects on men, often compared to menopause in women.

Androgens

Male sex hormones, such as testosterone, that are present in both males and females but usually at higher levels in males, affecting physical development and sexual features.