# Recent content by ovais

1. ### Effect of doping concentration on the depletion width of p-n junction diodes

Thank you eq1 for the help and I will surely read the book from the link. But from what you wrote I have some small questions or doubts. When here you say "given electric field" does the word given electric filed means the electric filed requires is fixed for a pn junction of given material...
2. ### Effect of doping concentration on the depletion width of p-n junction diodes

Thank you phyzguy, yes I read wikipedia on this.But I am still not satisfied with the answer (not because answer is wrong but because I must be missing something). I have the following issues with this. (1) It is said to get the same electric field with the increased doping less space...
3. ### Effect of doping concentration on the depletion width of p-n junction diodes

My question for now is as follows: Why does a high doping concentration causes a decrease in the thickness of depletion region. Any help will be highly appreciated! Thanks a bunch Regards!
4. ### Area covered on Earth by geostationary satellites

I am sorry I just did a little mistake in converting angles from trigonometry ratio, now I got the correct angle. 162° so to cover whole earth 2 satellites are not enough and therefore minimum of 3 must requires. [The forum rules actually forbid giving help until that effort is shown]...
5. ### Area covered on Earth by geostationary satellites

My question is, given that the height of geostationary satellite to be 35786 Km and radius of about 6378km determine the area covered by a geostationary satellite Or deteremine minimum number of geostationary satellites requires to cover whole earth. Regards thanks a bunch :)
6. ### I What an electron in an atom will do when given more energy

Thanks hilbert2 for the answer with rigorous concepts of QED. Form what Gene Naden endorse and what I could conclude from your post is that the answer to my very question in my first post of this thread is that the electron will do nothing with that energy and will not go to next excited state...
7. ### I What an electron in an atom will do when given more energy

Thanks Gene Naden giving your opinion and I also think so :) however just need an answer from someone who can answer this with surety not a mere opinion.
8. ### I What an electron in an atom will do when given more energy

Hello all, I have a question. Consider an electron in a shell of an atom has energy as 1.0ev and in the next shell it energy should be 2.7eV and the further next level energy is let's say 3.1eV. Means an energy gap of 1.7eV is their between first and second level and an energy gap o 2.1 eV is...
9. ### B What shape would the Earth appear to have if it were just covered by water

So how would then it shape appear, same as that of solid surface seen now or a perfect sphere or what can be predicted about a modified shape? Regards
10. ### B What shape would the Earth appear to have if it were just covered by water

Hello all, I was going through study of gravitation of earth. The book teachs that gravity of earth is more near poles than at equator as earth is not perfect sphere rather radius of earth is lesser near poles larger at equator. A thought came in my mind that if the water at level goes also...
11. ### B Does a rotating rigid body has single angular velocity.

Do you mean we can't or atleast don't talk about angular velocity of body about points that do not exist on axis of rotation?
12. ### I Controversy about the nature of finite angular displacement

What is "that way" I would like if you write it in more open way instead of saying"that way", I mean what will you say how we treat infinitesimal small displacement to come up with definitions of torque and angular momentum as told by you? Regards
13. ### B Does a rotating rigid body has single angular velocity.

Hello all, First of all I want to mention what believe or result of concepts, do I hold about rotational motion especially about the angular velocity. I assume that unlike velocity angular velocity has to worked out from some point. I will begin with particle for this I assume that the question...
14. ### I Controversy about the nature of finite angular displacement

Thank you all :)
15. ### I Controversy about the nature of finite angular displacement

So should I say that finite angular displacements are neither scalars nor vectors(here risk is that my students will ask in what category are they fall and questions like what is the name of that category etc fall upon me :)) ) Or should I say it is controversial matter just remember that they...