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

Find the amplitude of the electric field in a parallel beam of light of intensity 2.0 Wm2

A
28.5 N C1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
38.8 N C1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
43.2 N C1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
31.9 N C1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 38.8 N C1
We can say intesity as
I=Uav×c
where
Uav=energy density=12ε0E20
c=speed of light
E0=2Icε0
By putting the value given we get
E0=38.8 NC1


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electromagnetic Spectrum
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon