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Question
Draw the intensity pattern for single slit diffraction.
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Solution
Intensity pattern for single slit diffraction:
RELATED QUESTIONS
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.
In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of nλ/a. Justify this by suitably dividing the slit to bring out the cancellation.
Draw the intensity pattern for double slit interference.
State differences between interference and diffraction patterns.
Using the monochromatic light of same wavelength in the experimental set-up of the diffraction pattern as well as in the interference pattern where the slit separation is 1 mm, 10 interference fringes are found to be within the central maximum of the diffraction pattern. Determine the width of the single slit, if the screen is kept at the same distance from the slit in the two cases.
Which electric bulb is required for the observation?
How should the slit be oriented relative to the filament of the lit glass bulb?
What pattern appears when the bulb filament is viewed through the slit?
What fringe pattern is observed through a red colour filter?
Why do coloured fringes appear with white light and no filter?
