ElectrostaticsHard
Question
Two positrons (e+) and two protons (p) are kept on four corners of a square of side a as shown in figure. The mass of proton is much larger than the mass of positron. Let q denotes the charge on the proton as well as the positron then the kinetic energies of one of the positrons and one of the protons respectively after a very long time will be -
Options
A.
B.
C.
D.
Solution
As mass of proton >>> mass of positron so initial acceleration of positron is much larger than proton. Therefore positron reach far away in very short time as compare to proton.
2Ke+ =
⇒ Ke+ =
and 2Kp = 
- 0⇒ Kp =
Create a free account to view solution
View Solution FreeMore Electrostatics Questions
A charged cork of mass m suspended by light string is placed in uniform electric field of strength E = × 105NC-1 as...A charge is placed at a distance r from the axis of dipole. Force acting on it is F. If distance is made to double then ...If the potential in the region of space near the point (-2, 4, 6)m is V = 80 x2 + 60 y2 volt. Then components of electri...The electric intensity due to a dipole of length 10 cm and having a charge of 500 μC, at a point on the axis distan...A horizontal electric field (E = (mg)/q) exists as shown in figure and a mass m attached at the end of a light rod. If m...