What is diffraction of light?
a) Bending of light around corners
b) Splitting of light into colors
c) Reflection of light from surfaces
d) Absorption of light by materials
In which of the following situations does diffraction occur?
a) When light passes through a narrow slit
b) When light is reflected from a mirror
c) When light is refracted through a prism
d) When light is absorbed by a material
Which of the following factors does NOT affect the diffraction pattern of light?
a) Wavelength of the light
b) Width of the slit
c) Distance between the source and the slit
d) Angle of incidence
What happens to the diffraction pattern as the wavelength of light increases?
a) The diffraction fringes become narrower
b) The diffraction fringes become wider
c) The diffraction pattern disappears
d) The intensity of the diffraction fringes decreases
The phenomenon of diffraction can be explained by which wave property?
a) Reflection
b) Refraction
c) Interference
d) Polarization
What is the central maximum in a diffraction pattern?
a) The first dark fringe
b) The first bright fringe
c) The brightest central fringe
d) The last dark fringe
In a single-slit diffraction experiment, the angle for the first minimum is given by:
a) λ / d
b) d / λ
c) λ / sin(θ)
d) sin(θ) = λ / d
What is the condition for constructive interference in a diffraction pattern?
a) Path difference = λ / 2
b) Path difference = λ
c) Path difference = mλ, where m is an integer
d) Path difference = (2m + 1)λ / 2
In a double-slit diffraction experiment, how does increasing the distance between the slits affect the diffraction pattern?
a) The fringes become wider
b) The fringes become narrower
c) The number of fringes decreases
d) The intensity of the fringes increases
The spacing between adjacent maxima in a single-slit diffraction pattern is inversely proportional to:
a) Wavelength of the light
b) Slit width
c) Angle of diffraction
d) Distance from the slit to the screen
What is the role of the screen in a diffraction experiment?
a) It reflects the light
b) It absorbs the light
c) It detects the diffraction pattern
d) It filters the light
In the diffraction of light, what is the relationship between the wavelength and the diffraction angle?
a) The longer the wavelength, the smaller the diffraction angle
b) The longer the wavelength, the larger the diffraction angle
c) The wavelength has no effect on the diffraction angle
d) The diffraction angle is constant for all wavelengths
In a diffraction grating, how is the diffraction angle related to the number of lines per unit length?
a) The diffraction angle increases with more lines
b) The diffraction angle decreases with more lines
c) The diffraction angle remains the same regardless of the number of lines
d) The diffraction angle is unaffected by the number of lines
Which type of diffraction pattern is produced by a diffraction grating?
a) Single bright central maximum
b) Multiple bright and dark fringes
c) Multiple sharp maxima at fixed angles
d) Continuous spectrum of colors
What is the principal maxima in the diffraction pattern?
a) The central bright fringe
b) The first dark fringe
c) The first bright fringe on either side of the central maximum
d) The last dark fringe
What does the diffraction grating equation relate?
a) Angle of diffraction, wavelength, and slit separation
b) Angle of diffraction, wavelength, and screen distance
c) Wavelength and intensity of light
d) Wavelength and slit width
What happens to the diffraction pattern when the slit width is decreased?
a) The central maximum becomes narrower
b) The central maximum becomes wider
c) The number of maxima increases
d) The intensity of the fringes decreases
What causes the dark fringes in a diffraction pattern?
a) Constructive interference
b) Destructive interference
c) Reflection
d) Refraction
In a double-slit diffraction experiment, if the distance between the slits is doubled, how will the interference pattern change?
a) The fringe width increases
b) The fringe width decreases
c) The fringe width remains the same
d) The fringes become more intense
How does the diffraction pattern change as the distance from the slit to the screen increases?
a) The fringes become smaller
b) The fringes become larger
c) The fringe intensity increases
d) The number of fringes increases
What is the function of a diffraction grating in spectroscopy?
a) It produces an interference pattern
b) It splits light into its component colors
c) It magnifies the image
d) It filters out unwanted light
Which of the following is a practical application of diffraction of light?
a) Telescope lenses
b) CD and DVD players
c) Solar cells
d) Microscopes
In diffraction through a slit, how does the intensity of the central maximum compare to the intensity of other maxima?
a) The central maximum is dimmer
b) The central maximum is brighter
c) The intensity is the same for all maxima
d) The central maximum disappears
What kind of light source is used to observe the diffraction of light?
a) Only monochromatic light
b) Only white light
c) Both monochromatic and white light
d) Both infrared and visible light
Which factor increases the number of fringes in a single-slit diffraction pattern?
a) Increasing the wavelength
b) Decreasing the slit width
c) Increasing the distance to the screen
d) Decreasing the screen distance
In diffraction through a double slit, the condition for constructive interference is:
a) d sin(θ) = mλ
b) d sin(θ) = (m + 1/2) λ
c) d sin(θ) = λ
d) d sin(θ) = 0
