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An interference pattern was made by using red light. If the red light is replaced by blue light, the fringes will becomes
Options
(a) Wider
(b) Narrower
(c) Fainter
(d) Brighter
Correct Answer:
Narrower
Explanation:
Fringe width β = λD / d
β(ʀed) / β(ʙlue) = λ(ʀed) / λ(ʙlue)
λ(ʙlue) is < λ(ʀed)
Therefore, Fringe width with blue light < β with red light.
Fringes become narrower with blue light.
Related Questions: - The product of pressure and volume hve thesame units as the product of
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
- Which of the following statement about scalar quantity is true?
- The dimensions of latent heat are
- Depletion layer contains
Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The product of pressure and volume hve thesame units as the product of
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
- Which of the following statement about scalar quantity is true?
- The dimensions of latent heat are
- Depletion layer contains
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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