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Young's Double Slit Experiment questions with solutions
Practice Wave Optics for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 15 questions
- MCQeasyWave Optics
In a Young's double-slit experiment, the amplitudes of light coming from the two slits are in the ratio 2:1. The ratio of maximum to minimum intensity is:
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13 April 2023 Evening Shift
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Two wavelengths λ₁ and λ₂ are used in Young's double slit experiment λ₁ = 450 nm and λ₂ = 650 nm. The minimum order of fringe produced by λ₂ which overlaps with the fringe produced by λ₁ is n. The value of n is ____.
JEE Mains 2024 04 Apr Morning Shift
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Monochromatic light of wavelength 500 nm is used in Young's double slit experiment. An interference pattern is obtained on a screen. When one of the slits is covered with a very thin glass plate (refractive index = 1.5), the central maximum is shifted to a position previously occupied by the 4th bright fringe. The thickness of the glass-plate is ______ μm.
JEE Mains 2024 09 Apr Evening Shift
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Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light wavelength 500 nm is used. The width of each slit to obtain 10 maxima of the double slit pattern within the central maximum of the single slit pattern is ______ × 10⁻⁴ m.
JEE Mains 2024 08 Apr Evening Shift
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In a double slit experiment shown in figure, when light of wavelength 400 nm is used, dark fringe is observed at P. If D = 0.2 m. the minimum distance between the slits S₁ and S₂ is ______ mm.

JEE Mains 2024 29 Jan Morning Shift
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In Young's double slit experiment, the position of the 5th bright fringe from the central maximum is 5 cm. The distance between slits and screen is 1 m and the wavelength of monochromatic light is 600 nm. The separation between the slits is:
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JEE Mains25 January 2023Morning Shift
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In a Young's double slit experiment, the intensity at a point is 1/4th of the maximum intensity, the minimum distance of the point from the central maximum is ________ μm. (Given: λ = 600 nm, d = 1.0 mm, D = 1.0 m)
JEE Mains 2024 09 Apr Morning Shift
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In Young’s double slit experiment, light from two identical sources are superimposing on a screen. The path difference between the two lights reaching at a point on the screen is 7λ/4. The ratio of intensity of fringe at this point with respect to the maximum intensity of the fringe is :
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JEE Mains 2024 29 Jan Evening Shift
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In a double slit experiment the distance between the slits is 0.1 cm and the screen is placed at 50 cm from the slits plane. When one slit is covered with a transparent sheet having thickness t and refractive index n(= 1.5), the central fringe shifts by 0.2 cm. The value of t is ____ cm.
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JEE Mains 202621 January Morning Shift
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In Young's double slit experiment, carried out with light of wavelength 5000 Å, the distance between the slits is 0.3 mm and the screen is at 200 cm from the slits. The central maximum is at x = 0 cm. The value of x for third maxima is ______ mm.
JEE Mains 2024 05 Apr Morning Shift
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