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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 particle moving in a straight line with uniform acceleration is observed
- The near point and far point of a person are 40 cm and 250 cm, respectively.
- A thin ring of radius R meter has charge q coulomb uniformly spread on it
- In which process, the P-V indicator diagram is a straight line parallel to volume
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle moving in a straight line with uniform acceleration is observed
- The near point and far point of a person are 40 cm and 250 cm, respectively.
- A thin ring of radius R meter has charge q coulomb uniformly spread on it
- In which process, the P-V indicator diagram is a straight line parallel to volume
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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