Request a call back

Join NOW to get access to exclusive study material for best results

# CBSE Class 12-science Answered

Why is the intensity of light is directly proportional to the square of amiplitude

Asked by vashu7985864937 | 23 Dec, 2021, 12:28: AM
Expert Answer
Light is electromagnetic radiation .

Intensity of electromagnetic wave I = (1/2) ε E2 c

where ε is permittivity of medium , E is intensity of elecric field and c is speed of light

Since Electric field intensity is proportional to amplitude and intensity of light is proportional to
square of electric field intensity , then intensity of light is proportional to square of amplitude .
Answered by Thiyagarajan K | 23 Dec, 2021, 08:10: AM

## Concept Videos

CBSE 12-science - Physics
Asked by vashu7985864937 | 23 Dec, 2021, 12:28: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mufeedatvp2000 | 19 Apr, 2020, 04:20: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by dumpapurush | 22 Oct, 2018, 10:48: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by ashwin.mts | 01 Oct, 2018, 05:27: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mbinukurian1971 | 25 Jul, 2018, 12:29: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 19 May, 2014, 01:22: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 19 May, 2014, 01:38: PM
ANSWERED BY EXPERT
×