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A parallel beam of light of wavelength 5...

A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Find the width of the slit.

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0.2 nm
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NCERT BANGLISH-WAVE OPTICS-EXERCISES
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  7. You have learnt in the text how Huygens’ principle leads to the laws o...

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  10. In double-slit experiment using light of wavelength 600 nm, the angula...

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  11. Answer the following questions: (a) In a single slit diffraction exp...

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  15. Answer the following questions: (e) Ray optics is based on the assum...

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  16. Two towers on top of two hills are 40 km apart. The line joining them ...

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  17. A parallel beam of light of wavelength 500 nm falls on a narrow slit a...

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  18. Answer the following questions: (a) When a low flying aircraft passe...

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  19. Answer the following questions: (b) As you have learnt in the text, ...

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  20. In deriving the single slit diffraction pattern, it was stated that th...

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