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# Ask a Question

At PlusTwoPhysics you can now post your questions and doubts online and get the answers on email.

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## 16 Comments

1. arsh says:

sir my ques. is In annihilation concept of chp. electrostatics why e- + e+ -> 2gamma ray photon,

2. Dwane says:

Find the value 0f 50J/Min on a sytem which has 100g, 100cm and 1 min as fundamental units

3. hemant says:

I want to know abt the syallabus and tha date of exams for BS Physics in IISC..

4. sudhaa says:

i need physics 2010 tamilnadu public exam question paper

5. deepak says:

sir when we climb up a rope with acceleration how do tension helps in that please explain

• Use Newton’s laws of motion and free body diagrams. When we are at rest or moving up or down without acceleration, our weight will be equal to T.
But when moving with acceleration, it will be different. While climbing up with acceleration, ma = T-mg
or T = m(a+g)

6. devender sharma says:

when we climb up then rope is very tight because of our weight. then tension is greater than weight so climb. there ma=T-mg (because tension is greater)you right admin

7. sachin says:

is electric field intensity,,,,and electric field strength is same

8. sachin says:

relation between electrivc field intensity and flux density in case of sphere containing charge
a) d=e/e0
b) d=q/e0
c) d=e.e0
d) d=none

9. kinagi says:

the point at which 2 parallel lines meet is called
INFINITY …… a basic concept forgotten by most of the people

10. specific resistance of copper wire is 1.6 into 10 rest to the power -8 ohm.m. What happens to its specific resistance and resistance if one meter long wire is cut in to two pieces??

plz answer it.

11. a charge q is placed at the center of the line joining two equal charges Q.Show that the system of three charge will be of equilibrium,if q=-Q/4?

12. two electrons and a positive charge q are held along at straight line.At what position and at what value at q will the system equilibrium?

13. xakk nakk says:

Which are the important things or chapters in 11th physics study?

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