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STD 12 - 10. Wave optics — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 10. Wave optics4 Marks
MCQ
Assertion : Coloured spectrum is seen when we look through a muslin cloth.

Reason : It is due to the diffraction of white light on passing through fine slits

  • ✓
    both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    the Assertion is correct but Reason is incorrect.
  • D
    both the Assertion and Reason are incorrect.
✓

Answer

Correct option: A.
both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
a
Porous muslin cloth has holes comparable to the wavelength of light falling on it. So, it get diffracted there forming fringes of different colours. We see it as colour spectrum.

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