agra,ahmedabad,ajmer,akola,aligarh,ambala,amravati,amritsar,aurangabad,ayodhya,bangalore,bareilly,bathinda,bhagalpur,bhilai,bhiwani,bhopal,bhubaneswar,bikaner,bilaspur,bokaro,chandigarh,chennai,coimbatore,cuttack,dehradun,delhi ncr,dhanbad,dibrugarh,durgapur,faridabad,ferozpur,gandhinagar,gaya,ghaziabad,goa,gorakhpur,greater noida,gurugram,guwahati,gwalior,haldwani,haridwar,hisar,hyderabad,indore,jabalpur,jaipur,jalandhar,jammu,jamshedpur,jhansi,jodhpur,jorhat,kaithal,kanpur,karimnagar,karnal,kashipur,khammam,kharagpur,kochi,kolhapur,kolkata,kota,kottayam,kozhikode,kurnool,kurukshetra,latur,lucknow,ludhiana,madurai,mangaluru,mathura,meerut,moradabad,mumbai,muzaffarpur,mysore,nagpur,nanded,narnaul,nashik,nellore,noida,palwal,panchkula,panipat,pathankot,patiala,patna,prayagraj,puducherry,pune,raipur,rajahmundry,ranchi,rewa,rewari,rohtak,rudrapur,saharanpur,salem,secunderabad,silchar,siliguri,sirsa,solapur,sri-ganganagar,srinagar,surat,thrissur,tinsukia,tiruchirapalli,tirupati,trivandrum,udaipur,udhampur,ujjain,vadodara,vapi,varanasi,vellore,vijayawada,visakhapatnam,warangal,yamuna-nagar
Destructive Interference

Destructive Interference - Physics

When two waves collide while traveling through the same medium, what happens? What effect would the waves colliding have on the medium's appearance? Will the two waves collide and bounce off one other or will they travel through each other? Wave interference is a topic that deals with the collision of two or more waves traveling through the same medium.

Definition of Interference

When two waves collide while traveling across the same medium, this is known as wave interference. The medium takes on a shape as a result of the net effect of the two distinct waves on the medium's particles due to wave interference. Consider two pulses of equal amplitude flowing in opposite directions along the same medium to begin our investigation of wave interference. Assume that each wave is 1 unit higher at its crest and has the shape of a sine wave. As the sine pulses become closer to each other, there will come a point where they are fully overlapped.

destructive interference

The resulting shape of the medium at this point is an upward displaced sine pulse with a 2 unit amplitude. The diagrams below show snapshots of the medium before and during interference for two different pulses. Individual sine pulses are depicted in red and blue, with the resulting medium displacement depicted in green.

Constructive Interference

Constructive interference is a type of interference that happens when two interfering waves have the same displacement in the same direction at any point along with the medium.

destructive interference

Destructive Interference

Destructive interference is a type of interference that happens when the two interfering waves have a displacement in the opposite direction at any point along with the medium. Destructive interference occurs when a sine pulse with a maximum displacement of +1 unit meets a sine pulse with a maximum displacement of -1 unit. The graphic below illustrates this.

The interfering pulses in the diagram above have the same maximum displacement but travel in different directions. When the two pulses are totally overlapped, the effect is that they utterly destroy each other. There is no subsequent displacement of the medium's particles at the instant of total overlap. This state of "destruction" is not permanent. In truth, claiming that the two waves annihilate each other is only half accurate. When the two pulses are overlapped, the effect of one of the pulses on the movement of a specific medium particle is annihilated or negated by the influence of the other pulse.

Each particle pulls on its nearest neighbor as waves convey energy through a medium. The upward pull of one pulse is balanced (canceled or annihilated) by the downward pull of the other pulse when two pulses with opposite displacements (i.e., one pulse displaced up and the other down) meet at a particular location. There is still an upward displaced pulse and a downward displaced pulse after the two pulses pass past each other, both going in the same direction as before the interference. Destructive interference only causes a temporary circumstance in which the medium's displacement is less than the largest amplitude wave's displacement.

Because the two interfering pulses have opposite displacements, this is also destructive interference. The interference's destructive character prevents total cancellation in this scenario.

Surprisingly, the collision of two waves along a medium has no effect on the individual waves, nor does it cause them to stray from their intended route. When compared to what happens when two billiard balls collide or two football players collide, this behavior is astounding. Billiard balls may collide and bounce off one another, just as football players may collide and come to a halt. However, two waves will collide, form a net resultant shape of the medium, and then go back to doing what they were doing before the irradiation.

Aakashians JEE Topper

Aakashians NEET UG 2023 Champions Again

Historic Results 2023 Aakashians Qualified +1 Lakh

JEE Advanced 2023

JEE Advanced 2023 Stats

JEE Advanced 2022 Topper

NEET Related Links

NEET Exam 2024

NEET 2024 Exam Dates

NEET 2024 Exam pattern

NEET 2024 Syllabus

NEET 2024 Eligibility Criteria

NEET 2024 Application

NEET UG Counselling


NEET UG Result

NEET 2024 Cut Off

Neet 2023 Toppers List Names & Rank

Neet Result 2023 Toppers list rank cut off

Neet Answer key Live Download PDF

Neet 2023 State Toppers List

JEE MAIN Related Links

JEE Main 2024

JEE Main Rank Predictor 2024

JEE Main College Predictor 2024

JEE Main 2024 Exam Dates

JEE Main 2024 Exam pattern

JEE Main 2024 Application

JEE Main 2024 Eligibility Criteria

JEE Main 2024 Syllabus

JEE Main 2024 Physics Syllabus

JEE Main 2024 Maths Syllabus

JEE Main 2024 Chemistry Syllabus

JEE Main 2024 Admit Card

JEE Main 2024 Counselling

JEE Main marks vs rank vs percentile

JEE Advanced Result 2023 live topper list

JEE Exam Preparation - How to calculate your rank jee

JEE Maths Syllabus - Important topics and weightage

JEE Advanced Related Links

JEE Advanced 2024 Exam Dates

JEE Advanced 2024 Application

JEE Advanced 2024 Eligibility Criteria

JEE Advanced 2024 Syllabus

JEE Advanced 2024 Maths Syllabus

JEE Advanced 2024 Physics Syllabus

JEE Advanced 2024 Chemistry Syllabus

JEE Advanced Exam Result

JEE Advanced Exam Dates

JEE Advanced Registration Dates

CUET Related Links

CUET 2024 Eligibility Criteria

CUET 2024 Admit Card

CUET 2024 Exam Pattern

CUET 2024 FAQs

CUET 2024 Counselling

CUET 2024 Syllabus

CUET 2024 Result

CUET 2024 Answer Key

CUET 2024 Preparation


CUET 2024 Application Form

Talk to our expert
Resend OTP Timer =
By submitting up, I agree to receive all the Whatsapp communication on my registered number and Aakash terms and conditions and privacy policy