Author Question: Take the lens maker equation and show that a lens which has been turned around (surface 1 becomes 2 ... (Read 92 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
Take the lens maker equation and show that a lens which has been turned around (surface 1 becomes 2 and 2 becomes 1 ) has the same focal length.
 
  What will be an ideal response?

Question 2

An emf is induced in a wire by changing the current in a nearby wire.
 
  Indicate whether the statement is true or false



abctaiwan

  • Sr. Member
  • ****
  • Posts: 355
Answer to Question 1

1/f=(n-1)(1/R1 - 1/R2 ) A sign change occurs when 1 and 2 are exchanged, and the radii themselves change sign because the center of curvature moves to other side of surface. These sign changes cancel each other out and yield the same f.

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

For a complete list of videos, visit our video library