An Object Is Placed on an Optical Bench

question 77

Multiple Choice

An object is placed on an optical bench. A lens with a focal length of 12 cm is placed 20 cm from the object. Where should a second lens, with a focal length of 4.0 cm, be placed if a total magnification +6 is to be obtained?

• A)20 cm from the first lens
• B)35 cm from the first lens
• C)40 cm from the first lens
• D)30 cm from the first lens
• E)25 cm from the first lens

---

Definitions:

Muscle Contraction

The process where muscle fibers shorten or tighten, leading to movement or stabilization of body parts.

Intestinal Muscle

Smooth muscle found in the intestines, responsible for the movement of food along the digestive tract through peristalsis.

Autonomic Nervous System

The part of the nervous system that controls involuntary actions of the smooth muscles, heart, and glands.

Somatic Motor System

A part of the nervous system that is responsible for the voluntary movement of muscles, involving motor neurons that connect the central nervous system to muscle fibers.