interferece of light and huygen principle questions with solutions

Showing 1–10 of 39 questions

• MCQmediumWave Opticsinterferece of light and huygen principle

  A soap film on a ring of radius 3 cm evaporates. Light of wavelength 580 nm gives minimum transmission every 12 s. Re$fractive$ index is 1.45. The rate of evaporation is:

  Options

  • Option A

    1.5π×10⁻¹³ m³/s

  • Option B

    15π×10⁻¹³ m³/s

  • Option C

    3π×10⁻¹³ m³/s

  • Option D

    3π×10⁻¹² m³/s

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• MCQeasyWave Opticsinterferece of light and huygen principle

  Two mutually incoherent sources illuminate the same point on a screen. The intensities produced by the two sources separately at that point are 3I and 5I. What is the resultant intensity when both sources are present simultaneously?

  Options

  • Option A

    2I

  • Option B

    8I

  • Option C

    15I

  • Option D

    4I

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent point sources A and B emit in phase and are separated by 3.6λ. Considering only points lying strictly between the two sources on the line AB, how many points of minimum intensity occur?

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent waves produce intensities 9I and 4I separately at a point. If the relative phase can vary through all possible values, find I(max) ÷ I(min).

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent sources A and B are in phase and form the endpoints of the diameter of a semicircle with AB = 6λ. An observer moves along the open semicircular arc joining A and B. How many positions of minimum intensity occur on the arc?

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• MCQeasyWave Opticsinterferece of light and huygen principle

  In a two-wave interference experiment, the path difference between the coherent waves at point A is λ/3, while at point B it is λ/6. Using the equal-intensity condition employed in the given solution, what is the ratio of the resultant intensities $I_{A}$/$I_{B}$?

  Options

  • Option A

    3

  • Option B

    4

  • Option C

    1/3

  • Option D

    1/4

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent point sources A and B are in phase and form the endpoints of the diameter of a semicircle. Their separation is AB = 6λ. An observer moves along the open semicircular arc from A to B, with the endpoints excluded. How many positions of maximum intensity occur on the arc?

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• MCQeasyWave Opticsinterferece of light and huygen principle

  A plane wave is incident from medium 1 into medium 2. The speed of light in medium 2 is 0.75 times the speed in medium 1. If the angle of incidence is 30°, what is the angle of refraction, approximately, according to Huygens' construction and Snell's law?

  Options

  • Option A

    14°

  • Option B

    22°

  • Option C

    30°

  • Option D

    42°

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• MCQeasyWave Opticsinterferece of light and huygen principle

  Two coherent point sources A and B have equal frequency and are in phase. An observer moves along the perpendicular bisector of AB. Which statement correctly describes the interference condition experienced by the observer?

  Options

  • Option A

    The observer crosses alternate maxima and minima

  • Option B

    Only minima are observed

  • Option C

    The path difference remains zero and the observer stays on a maximum

  • Option D

    The intensity necessarily decreases continuously to zero

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• MCQmediumWave Opticsinterferece of light and huygen principle

  Two coherent sources of equal intensity I produce a resultant intensity 3I at a point. If the path difference is the least positive value capable of producing this intensity, what is that path difference?

  Options

  • Option A

    λ ÷ 3

  • Option B

    λ ÷ 6

  • Option C

    λ ÷ 4

  • Option D

    λ ÷ 2

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