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

Author Question: A helium-neon laser emits red light having a wavelength of 6.4 10-7 m and a power of 0.5 mW. How ... (Read 155 times)

lracut11

  • Hero Member
  • *****
  • Posts: 536
on: Jul 28, 2018
A helium-neon laser emits red light having a wavelength of 6.4  10-7 m and a power of 0.5 mW. How many photons are emitted each second?
 a. 6.4  1038
  b. 1.6  1021
  c. 3.2  1025
  d. 2.6  1018
  e. 1.6  1015

Question 2

A solid state pulsed laser has an energy of 400 mJ per pulse. If its wavelength is 1.06  10-6 m, how many photons are in each pulse?
 a. 2  1025
  b. 2  1021
  c. 3  1018
  d. 6  1038
  e. 2  1018


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mohan

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 28, 2018
Answer to Question 1

E

Answer to Question 2

E


lracut11

  • Member
  • Posts: 536
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Synaptic response of photoreceptors to dark and light. Synaptic response of photoreceptors to dark and light.
The Chernobyl, Ukraine, Nuclear Power Plant Disaster The Chernobyl, Ukraine, Nuclear Power Plant Disaster
The biochemical reactions of near-infrared light The biochemical reactions of near-infrared light
A Toyota/Lexus hybrid electric vehicle has a ready light. If the ready light is on, the engine can ... A Toyota/Lexus hybrid electric vehicle has a ready light. If the ready light is on, the engine can ...
Light Light
The Fukushima disaster in Japan caused many governments to rethink their commitment to nuclear power The Fukushima disaster in Japan caused many governments to rethink their commitment to nuclear power
Video: Conjunctivitis

For a complete list of videos, visit our video library