MEDIUM
12th ICSE
IMPORTANT
Earn 100

Draw a labelled graph to show variation in intensity of diffracted light with angular position in a single-slit diffraction experiment.

Important Questions on Diffraction of Light

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 1
Define diffraction of light and name the wavefront used in Fraunhofer diffraction. Obtain the relation e sin θ=λ for the first minima.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 2
Draw diagram of diffraction of light due to a single slit and draw a graph showing the variation of intensity of light in a single slit Fraunhofer diffraction.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 2
Fraunhofer diffraction from a single-slit of width 1.24×10-6 m is observed with light of wavelength 6200 Å. Calculate the angular width of the central maximum.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 3
A parallel beam of light of wavelength 600 nm falls normally on a narrow slit of width 0.3 mm. Calculate the angular separation between the first minimum and the central maximum.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>QUESTIONS>Q 5
A Fraunhofer diffraction pattern due to a single-slit of width 0.2 mm is being obtained on a screen placed at a distance of 2 metre from the slit. The first minima lie at 5 mm on either side of the central maximum on the screen. Find the wavelength of light.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 1
At the first minimum adjacent to the central maximum of a single-slit diffraction pattern, the phase difference between the Huygens' wavelet from the edge of the slit and the wavelet from the mid-point of the slit is:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 3
A beam of light of λ=600 nm from a distant source falls on a single-slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between first dark fringes on either side of the central bright fringe is:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 8 - Diffraction of Light>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 4
For a parallel beam of monochromatic light of wavelength λ, diffraction is produced by a single slit whose width e is of the wavelength of light. If D is the distance of the screen from the slit, the width of the central maxima will be: