Two points B and C are such that length of AB and BC is l1 and l2 respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line AB and BC are in plane perpendicular to solenoid axis. If strength of induced electric field at B and C are same then value of θ, is(Given : 11+l2< radius of solenoid. And Point A is centre of the cross-sectional area).

Two points B and C are such that length of AB and BC is l1 and l2 resp

1.	Two points B and C are such that length of AB and BC is l1 and l2 respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line AB and BC are in plane perpendicular to solenoid axis. If strength of induced electric field at B and C are same then value of θ, is(Given : 11+l2< radius of solenoid. And Point A is centre of the cross-sectional area).
Answer» Two points $B$ and $C$ are such that length of $A B$ and $B C$ is $l_{1}$ and $l_{2}$ respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line $A B$ and $B C$ are in plane perpendicular to solenoid axis. If strength of induced electric field at $B$ and $C$ are same then value of $θ$ , is (Given : $1_{1} + l_{2} <$ radius of solenoid. And Point $A$ is centre of the cross-sectional area).