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Interference Questions

Practice 14 Interference questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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14
Total Questions
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3
Easy
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8
Medium
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3
Hard
Practice by Exam:Physics(14)

About interference — practice questions, PYQs & concepts

interference is a frequently-tested topic on Physics. ExamTest.live currently lists 14 interference questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

interference weight in competitive exams

Across our interference question bank, the largest sources are Physics (14). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 3 easy interference questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Interference Questions(1–14 of 14)

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Q1mediummcqPhysicsAIEEE 20042026
0% accuracy
The maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young’s double-slit experiment is:
Q2mediummcqPhysicsNEET 20192026
0% accuracy
In a double slit experiment, when light of wavelength was used, the angular width of the first minima formed on a screen placed away, was found to be . What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water? ()
Q3mediummcqPhysicsAIEEE 20072026
0% accuracy
In a Young's double slit experiment the intensity at a point where the path difference is ( being the wavelength of the light used) is . If denotes the maximum intensity, is equal to:
Q4mediummcqPhysicsAIEEE2026
A Young’s double slit experiment uses a monochromatic source. The shape of the interference fringes formed on a screen is:
Q5easymcqPhysicsAIEEE 20032026
To demonstrate the phenomenon of interference we require two sources which emit radiation of:
Q6mediummcqPhysicsAIEEE 20092026
A mixture of light, consisting of wavelength and an unknown wavelength, illuminates Young’s double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it is observed that the third bright fringe of known light coincides with the bright fringe of the unknown light. From this data, the wavelength of the unknown light is:
Q7hardmcqPhysicsAIEEE 20122026
In Young's double slit experiment, one of the slit is wider than other, so that the amplitude of the light from one slit is double of that from other slit. If be the maximum intensity, the resultant intensity when they interfere at phase difference is given by:
Q8mediummcqPhysicsJEE Main2026
Two coherent point sources and are separated by a small distance as shown. The fringes obtained on the screen will be:
image
Q9easymcqPhysicsPhysics
When exposed to sunlight, thin films of oil on water often exhibit brilliant colours due to the phenomenon of:
Q10mediummcqPhysicsPhysics
Two periodic waves of intensities and pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is:
Q11easymcqPhysicsPhysics
In the Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is is , ( being the wave length of light used). The intensity at a point where the path difference is , will be:
Q12mediummcqPhysicsPhysics
Two slits in Young’s experiment have widths in the ratio . The ratio of intensity at the maxima and minima in the interference pattern, is:
Q13hardmcqPhysicsPhysics
The intensity at the maximum in a Young’s double slit experiment is . Distance between two slits is , where is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance ?
Q14hardmcqPhysicsPhysics
The interference pattern is obtained with two coherent light sources of intensity ratio . In the interference pattern, the ratio will be:

Frequently Asked Questions

How many Interference questions are on ExamTest.live?▼
We have 14 Interference questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Interference MCQs free?▼
Yes. All Interference questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Interference questions?▼
Interference questions are commonly asked in Physics. You can filter by exam using the links above.
How do I practice Interference questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.