Virtual Labs

Wave Nature of Light with Young’s Double-Slit Experiment

1. Young's double slit experiment demonstrates the

a: Particle nature of light Explanation

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b: Wave nature of light Explanation

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c: Thermal nature of light Explanation

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d: Electrical nature of light Explanation

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2. Constructive interference occurs when the path difference between two waves is

a: (2n+1)λ/2 Explanation

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b: nλ Explanation

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c: λ/4 Explanation

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d: Zero only Explanation

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3. The condition for destructive interference in Young's double slit experiment is

a: d sinθ = nλ Explanation

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b: d sinθ = (n + 1/2)λ Explanation

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c: d sinθ = λ Explanation

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d: d sinθ = 2nλ Explanation

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4. The fringe width β in Young's double slit experiment is given by

a: β = d / λD Explanation

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b: β = D / λd Explanation

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c: β = λD / d Explanation

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d: β = λdD Explanation

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5. Two sources are said to be coherent if they

a: Have different wavelengths Explanation

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b: Emit waves of varying phase difference Explanation

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c: Have the same frequency and constant phase difference Explanation

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d: Are placed very close to each other Explanation

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6. Who performed the original double slit experiment to demonstrate the wave nature of light?

a: Sir Isaac Newton Explanation

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b: Albert Einstein Explanation

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c: Thomas Young Explanation

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d: James Clerk Maxwell Explanation

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7. In YDSE, what is the path difference at the central bright fringe?

a: λ/2 Explanation

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b: λ Explanation

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c: 2λ Explanation

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d: Zero Explanation

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8. In YDSE, if the distance D from slits to screen is increased, the fringe width β

a: Decreases Explanation

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b: Increases Explanation

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c: Remains the same Explanation

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d: Becomes zero Explanation

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9. The phase difference corresponding to a path difference of λ (one wavelength) is

a: π Explanation

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b: π/2 Explanation

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c: 2π Explanation

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d: 4π Explanation

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10. In YDSE, if the wavelength of light used is increased, the fringe width β

a: Decreases Explanation

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b: Remains the same Explanation

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c: Increases Explanation

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d: Becomes zero Explanation

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