Plancks Quiz

Last updated on Tuesday, November 22nd, 2022

Post Reads : 3,235

Questions in this quiz are related to Planck’s constant experiment. These viva questions will help you to understand the topic from different angles.

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1. What is the Red Color wavelength range?

 
 
 
 

2. What is the green color wavelength range?

 
 
 
 

3. What is Planck’s constant value?

 
 
 
 

4. How photon emits in the LEDs?

 
 
 

5. Does the LED work in the forward bias or the reverse bias?

 
 
 
 

6. Which material do we use an LED?

 
 
 
 

7. Can we achieve the population inversion process in LED too?

 
 
 

8. Why does the Blue color LED stopping potential is greater than the Red color LED?

 
 
 
 

9. In a semiconductor diode (as per V-I Characteristics) the current doesn’t flow in the beginning. But at a certain value of the potential, it appears. What has known as the name of this potential?

 
 
 

10. Semiconductor Material name that shows the optical property?

 
 
 
 

11. What is the blue color wavelength?

 
 
 
 

12. To determine Planck’s Constant, we equate two different energies. The name of these two are;

 
 
 
 

13. Who discovered that radiation is in a discrete form of energy?

 
 
 
 

14. How are photons emitted from the LED and from which section of the LED?

 
 
 
 

15. Why do not LED starts to glow immediately when you provide biasing to that?

 
 
 

Question 1 of 15

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Dr Sushil Kumar
Dr. Sushil Kumar, a physicist, an eminent researcher and a teacher for the benefit of students and fellow physicists alike. Apni Physics is an effort to create a better platform and also to help the students to be able to have content at their hands whenever they want, online. Dr. Sushil continues to upload his lectures and post articles about latest researches in physics, academic, physics education, and also lessons about daily life and how physics define every aspect of our everyday movement and life.

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