question_answer

A particle of mass m and charge q is released from rest in a uniform electric field. If there is no other force on the particle, the dependence of its speed v on the distance x travelled by it is correctly given by (graphs are schematic and not drawn to scale)                                                                        [JEE MAIN Held on 08-01-2020 Evening]

A)  

B)  

C)

D)  

Correct Answer: D

Solution :

\[{{v}^{2}}=\frac{2qE}{m}\cdot x\]