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Statement I: Thin films such as soap bub...

Statement I: Thin films such as soap bubble or a thin layer of oil on water show beautiful colors when illuminated by white light.
Statement II: It happens due to the interference of light reflected form the upper surface of thin film.

A

Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.

C

Statement-1 is true but statement-2 is false

D

Statement-1 is false, Statement-2 is true

Text Solution

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The correct Answer is:
C
the beautiful colours are seen an account of interference of light reflected from the upper and the lower surfaces of the thin film. As conditions for constructives and destructive interference depends upon the wave length of light, therefore interference fringes are observed.
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RESONANCE ENGLISH-PART TEST 4-Exercise
  1. The angular dispersion produced by a prism

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  2. A cylinderical optical fibre (quarter circular shape) of refractive i...

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  3. A light is incident on face AB of an equilateral glass prism ABC. Afte...

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  4. A ray hits the y-axis making an angle theta with y-axis as shown in th...

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  5. An isosceles trapezium of reflecting material of refractive index sqrt...

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  6. A triangular medium has varying refracting index n = n(0) + ax, where ...

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  7. An object AB is placed parallel and close to the optical axis between ...

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  8. A ray of light travelling in a transparent medium falls on a surface s...

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  9. Young's double-slit experiment is conducted in water (mu(1)) as shown ...

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  10. Two coherent monochromatic light beams of intensities I and 4I are sup...

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  11. If yellow light emitted by sodium lamp in Young's double - slit - expe...

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  12. What happens by the use of white light in Young's double slit experime...

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  13. The reflecting surface of a plane mirror is vertical. A particle is pr...

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  14. Astronomial telescope has two lenses of focal power 0.5D and 20D. Then...

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  15. The plane face of a plano convex lens is silvered.If mube the refrativ...

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  16. A vessel of depth 2 d cm is half filled with a liquid of refractive in...

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  17. A parallel beam of light is incident on a lens of focal length 10cm. A...

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  18. Wavelength of light used in an optical instrument are lambda(1) = 4000...

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  19. Statement I: Thin films such as soap bubble or a thin layer of oil on ...

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  20. Statement 1: If two prisms of small apex angles are made of same mater...

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