A slightly divergent beam of charged particles, accelerated by a potential difference V propagates from a point A on the axis of a long solenoid. The beam is focussed at a distance l from A by two magnetic induction values B₁ and B₂ one after another. Find the specific charge q/m of the particles.

I went through the solution of this question My doubt is:

Here it is agreeable that for B₁ we take l=nx(pitch) but for B₂ why do we take l=(n+1)x(pitch)?

Here don’t we need to know out of B₁ and B₂ which is greater and also that if B₂ is greater the why (n+1)xpitch only? Here what does one after the other imply?

Pranjal K

12 Years agoGrade upto college level