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प्रश्न
State differences between interference and diffraction patterns.
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उत्तर
| Interference Pattern | Diffraction Pattern | |
| 1 | In interference pattern the intensity of dark fringe is completely zero. | In diffraction pattern the intensity of secondary minima is minimum, but not completely zero. |
| 2 | In interference pattern the width of all the interference fringes is equal. | In diffraction pattern the width of central maxima is large, and on increasing distance, the width of maxima decreases. |
| 3 | In interference pattern the intensity of all the bright bands is equal. | In diffraction pattern the intensity of all the secondary maxima is not equal. |
संबंधित प्रश्न
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.
Draw the intensity pattern for double slit interference.
Derive the relation a sin θ = λ for the first minimum of the diffraction pattern produced due to a single slit of width ‘a’ using light of wavelength λ.
Which electric bulb is required for the observation?
Which items are optional in the apparatus?
How should the slit be oriented relative to the filament of the lit glass bulb?
What happens when the slit is not parallel to the filament?
Why is the fringe pattern wider with a red colour filter?
Why is the fringe pattern narrower with a blue colour filter?
What is visible with white light and no filter?
