Question

A charged particle passes through a uniform electric field existing between the parallel plates of a capacitor. The length of each plate is l. Its initial velocity is parallel to the plates. When it emerges from the field, its deflection from its initial path is δ, and its angular deflection from its initial direction is θ. Then, tan θ is equal to 

(a) δ/l 

(b) 2δ/l 

(c) δ/2l 

(d) none of these

Answer 1

Correct Answer is: (b) 2δ/l 

tan θ = δ/l/2 = 2δ/l