wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

An electron is projected as shown in the figure, with kinetic energy K, at an angle θ=45
between two charged plates. Ignore the gravity.
The magnitude of the electric field so that the electron just fails to strike the upper plate is

A
Kqd
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2Kqd
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
K2qd
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Infinite
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C K2qd

Hmaxd, where Hmax= maximum height electron can travel

u2sin2θ2a=d

θ=45and a=eEm

u2×12m2 × eE=d

12mu22Ee=d

12mu2=k

(k2Ee=d)

E=k2ed

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electric Field Due to Charge Distributions - Approach
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon