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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: - A wire in the form of a circular loop of one turn, carrying a current, produces
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¹H+⁷Li→⁴He+⁴He
Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wire in the form of a circular loop of one turn, carrying a current, produces
- Which wavelengths of sun is used finally as electric energy?
- A wire is stretched under a force. If the wire suddenly snaps the temperature
- In the Young’s double slit experiment, the intensity of light at a point on the screen
- What is the Q-value of the reaction? ¹H+⁷Li→⁴He+⁴He
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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