NEET Physics Interference MCQ Question
Which of the following statements about interference in wave optics is correct?
Constructive interference occurs when the path difference is an integer multiple of the wavelength.
Destructive interference occurs only when the path difference is equal to half the wavelength.
Interference patterns can be observed with incoherent light sources.
The intensity of light due to two coherent sources is proportional to the sum of their individual intensities.
Correct Answer
Detailed Explanation
Constructive interference occurs when the path difference is equal to nλ (where n is an integer), resulting in maximum intensity. Destructive interference occurs when the path difference is (n + 1/2)λ, leading to cancellation of the light waves at certain points. Incoherent sources do not maintain a fixed phase relationship, so they do not produce observable interference patterns.
Found an issue with this question?
Related Questions
More from Interference
What condition must be met for constructive interference to occur at a point P from two coherent sources S1 and S2?
What is the condition for destructive interference in terms of path difference between two coherent sources?
Which of the following statements about light interference is correct?
More from
Which of the following statements about Young's Double Slit experiment is correct?
What describes the behavior of wavefronts as they undergo reflection according to the principles of wave optics?
Assertion (A): Huygens' principle assumes that the amplitude of secondary wavelets is maximum in the forward direction. | Reason (R): This assumption ...