This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A CD player uses a laser with wavelength 900 nm. If the CD has a plastic coating with index 1.50, ... (Read 82 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
on: Jul 28, 2018
A CD player uses a laser with wavelength 900 nm. If the CD has a plastic coating with index 1.50, what is the wavelength in the plastic?
 a. 600 nm
  c. 1350 nm
  b. 500 nm
  d. 750 nm

Question 2

A pinhole camera is used to photograph a 23-cm tall object at a distance of 3.0 m, the image being projected on film at a distance of 46 cm from the pinhole. What are the height and orientation of the image?
 a. 3.5 cm, upright
  c. 12 cm, upright
  b. 3.5 cm, inverted
  d. 12 cm, inverted


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Viet Thy

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


moongchi

  • Member
  • Posts: 516
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

LegendaryAnswers

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

To make an ice pack, place crushed ice in a plastic bag, bleed the air out of it, and seal it. Wrap To make an ice pack, place crushed ice in a plastic bag, bleed the air out of it, and seal it. Wrap
One version of a bump cap is a molded plastic insert worn inside a regular cloth cap. One version of a bump cap is a molded plastic insert worn inside a regular cloth cap.
Plastic Bottles Plastic Bottles
Wavelength Wavelength
A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ... A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ...
The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum
Video: Forming urine ( influencing factors), Forming dilute urine & Forming concentrated urine

For a complete list of videos, visit our video library