« previous next »

Author Question: A camera has a lens that has an adjustable film distance used for focusing purposes. When the object ... (Read 139 times)

Mr.Thesaxman

  • Hero Member
  • *****
  • Posts: 514
on: Jul 28, 2018
A camera has a lens that has an adjustable film distance used for focusing purposes. When the object being photographed is at a very large distance, the distance from the lens to the film is 50.0 mm. What would be the lens-to-film distance for an in-focus object 2.00 m from the camera?
 a. 66.7 mm
  c. 51.3 mm
  b. 40.0 mm
  d. 48.8 mm

Question 2

The pupil of the eye increases in size under which condition?
 a. object viewed is well illuminated
  b. eye is focused on a nearby object
  c. object viewed is dimly illuminated
  d. eye is focused on a distant object


cdmart10

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

This squirrel, who was looking for a treat, has become desensitized to humans. The distance between This squirrel, who was looking for a treat, has become desensitized to humans. The distance between
The path of light through the cornea, iris, lens, and striking the retina. The path of light through the cornea, iris, lens, and striking the retina.
The Morris Adjustable Chair, designed by Philip Webb, made by Morris, Marshall, Faulkner & Co. The Morris Adjustable Chair, designed by Philip Webb, made by Morris, Marshall, Faulkner & Co.
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
The Global Positioning System determines the location of an object from its distances to ... The Global Positioning System determines the location of an object from its distances to ...
Focusing problems. Focusing problems.
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

For a complete list of videos, visit our video library