Question: If the energy gap ? ? ? ? E of a LED is 2 . 0 eV , what is the frequency f of the

If the energy gap ????E of a LED is 2.0 eV , what is the frequency f of the emitted light? Knowing that 1eV=1.60210-19J.
a.51014Hz
b.3.21015Hz
c.1.21014Hz
d.4.831014Hz

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

Q:

Answer the Activity 2 and the assignment part. 2. Click the lamp to turn on the light. When reading currents, click on the red button each time the brightness or color is changed. Read the texts so...

Q:

Photoelectric Effect Directions: Log into Gizmos via LCPSgo to go through the simulation. Respond to the questions and prompts in the orange boxes. Activity A: Wavelength and flux Get the Gizmo ready...

Q:

For example, when a ball is thrown into the air, it gains kinetic energy as it moves upward. As it reaches the top of its trajectory, this kinetic energy is converted into potential energy. When the...

Q:

kinetic energy is converted into potential energy. When the ball falls back to the ground, the potential energy is converted back into kinetic energy. The total amount of energy in the system remains...

Q:

energy is converted back into kinetic energy. The total amount of energy in the system remains constant throughout this process Do the entire questions: One of the most fundamental principles of...

Q:

1. The diagram above shows three energy levels of a hypothetical atom. The lowest available energy level is E1 = -5.0 eV. E, = -5.0CV a) Draw arrows on the above diagram showing all possible photon...

Q:

are the same regardless of where an observer is located. This principle has been confirmed by numerous experiments, including the famous Michelson-Morley experiment, and is a cornerstone of modern...

Q:

ergy in the system remains constant throughout this process Do the entire questions: One of the most fundamental principles of physics is the conservation of energy. This principle states that energy...

Q:

lativity is another key concept in physics. This principle states that the laws of physics are the same for all observers in uniform motion relative to one another. This means that there is no...

Q:

This means that there is no preferred frame of reference in the universe, and the laws of physics are the same regardless of where an observer is located. This principle has been confirmed by...

Q:

PART A On January 1, Year 5, Anderson Corporation paid $650,000 for 20,000 (20%) of the outstanding shares of Carter Inc. The investment was considered to be one of significant influence. In Year 5,...

Q:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Customer ID 652-54310 Results of A/R Confirmations Complete the worksheet below by reviewing the accounts receivable confirmation...

Q:

Which of the following statements concerning the characteristics of disability income insurance is ( are ) correct? A residual benefits clause preserves the purchasing power of the insured's...

Q:

6-hour period. The percentage data are the percentages of fishermen who caught x fish in a 6-hour period while fishing from shore. 0 1 2 3 at least 4 % 43% 37% 12% 7% 1% USE SALT (a) Convert the...