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

Author Question: A camera is used to photograph the full moon, which has an angular diameter of 0.51. The image on ... (Read 115 times)

wrbasek0

  • Hero Member
  • *****
  • Posts: 560
on: Jul 28, 2018
A camera is used to photograph the full moon, which has an angular diameter of 0.51. The image on the film is 2.5 mm in diameter. What is the focal length of the lens?
 a. 6.3 mm
  c. 13 mm
  b. 280 mm
  d. 450 mm

Question 2

A camera has a lens of focal length 50 mm and an f-number of 4.0 . What is the diameter of the lens?
 a. 50 mm
  c. 25 mm
  b. 100 mm
  d. 13 mm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


wrbasek0

  • Member
  • Posts: 560
Reply 2 on: Jul 28, 2018
:D TYSM

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

First Camera Trap Photos of Rare Leopard in China First Camera Trap Photos of Rare Leopard in China
A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr
The Moon The Moon
This iconic photograph by Dorothea Lange, entitled “Migrant Mother,” has become a famous ... This iconic photograph by Dorothea Lange, entitled “Migrant Mother,” has become a famous ...
Draw a full and complete mechanism for the following reaction shown below. Draw a full and complete mechanism for the following reaction shown below.
Video: Humerus Adduction Animation

For a complete list of videos, visit our video library