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

Author Question: If a monochromatic light beam with quantum energy value of 4.0 eV is incident upon a photocell where ... (Read 70 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 28, 2018
If a monochromatic light beam with quantum energy value of 4.0 eV is incident upon a photocell where the work function of the target metal is 1.60 eV, what is the maximum kinetic energy of ejected electrons?
 a. 4.6 eV
  c. 2.4 eV
  b. 4.8 eV
  d. 1.4 eV

Question 2

Light of wavelength 6.1  10-7 m has an energy of: (h = 6.63  10-34 Js, c = 3.00  108 m/s)
 a. 3.1  10-19 J
  c. 1.7  10-19 J
  b. 1.5  10-19 J
  d. 3.3  10-19 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SamMuagrove

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


erika

  • Member
  • Posts: 522
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Liddy

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Free Energy Enzymes Free Energy Enzymes
Metabolic pathways involved in lipolysis, the breakdown of fats (triglycerides) for energy. Metabolic pathways involved in lipolysis, the breakdown of fats (triglycerides) for energy.
“New” Renewable Energy Sources “New” Renewable Energy Sources
Wind turbines: the fastest-growing energy sector Wind turbines: the fastest-growing energy sector
Humans take in energy by eating food Humans take in energy by eating food
Potential energy Potential energy
Video: TRH/TSH/Thyroid hormone

For a complete list of videos, visit our video library