Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Two waves of same frequency and same amplitude from two monochromatic sources are allowed to superpose at a certain point. If in one case the phase difference is <img alt="\mathrm{0^{\circ}}" src="

Two waves of same frequency and same amplitude from two monochromatic sources are allowed to superpose at a certain point. If in one case the phase difference is \mathrm{0^{\circ}} and in other case is \mathrm{\pi / 2,} the ratio of the intensities in the two cases will be:

Option: 1

1 : 1


Option: 2

2 : 1


Option: 3

4 : 1


Option: 4

none of these


Answers (1)

best_answer

From \mathrm{I_R=I_1+I_2+2 \sqrt{I_1 I_2} \cos \phi}

When \mathrm{\phi=0^{\circ}, \mathrm{I}_{\mathrm{R}}=\mathrm{I}+\mathrm{I}+2 \sqrt{\mathrm{II}} \cos 0^{\circ}=4 \mathrm{I}}

When \mathrm{\phi=90^{\circ}, I_R^{\prime}=I+I+2 \sqrt{I I} \cos 90^{\circ}=2 \mathrm{I}}

\mathrm{ \therefore \frac{\mathrm{I}_{\mathrm{R}}}{\mathrm{I}_{\mathrm{R}}^{\prime}}=\frac{4 \mathrm{I}}{2 \mathrm{I}}=2: 1 }

Posted by

admin

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026 Registration LIVE: NTA session 1 applications close on November 27; apply at jeemain.nta.nic.in
anam-khan

JEE 2026: IIT admissions show major shift toward AI, data science, away from core engineering courses
anam-khan

JEE Main 2026: NIT Delhi cut-offs for BTech courses show ever-increasing demands for AI, computer skills

Latest Question