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प्रश्न
In a diffraction pattern due to a single slit, how will the angular width of the central maximum change, if the slit width is decreased?
Justify your answer.
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उत्तर
The angular width of the central maxima of a single slit diffraction pattern is 2θ = `(2λ)/"a"`
Angular width of central maxima `∝ 1/ "slit width"`
So, if the angular width is decreased, the angular width of the central maxima will increase.
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संबंधित प्रश्न
In the diffraction pattern due to a single slit of width 'd' with incident light of wavelength 'λ', at an angle of diffraction θ. the condition for first minimum is ....
(a)`lambda sin theta =d`
(b) `d costheta =lambda`
(c)`d sintheta=lambda`
(d) `lambda cos theta=d`
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- the size decreases.
- the intensity increases.
- the size increases.
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In a diffraction pattern due to a single slit, how will the angular width of the central maximum change, if the screen is moved closer to the slit?
Justify your answer.
