Diffraction

Q. In a single-slit diffraction pattern, how does the intensity of the first minimum compare to the intensity of the central maximum?
  • A. It is equal
  • B. It is half
  • C. It is zero
  • D. It is one-fourth
Q. In a single-slit diffraction pattern, how many minima are there on either side of the central maximum?
  • A. One
  • B. Two
  • C. Three
  • D. Infinite
Q. In a single-slit diffraction pattern, the width of the central maximum is 4 mm. If the slit width is halved, what will be the new width of the central maximum?
  • A. 2 mm
  • B. 4 mm
  • C. 8 mm
  • D. 16 mm
Q. In double-slit diffraction, what is the effect of increasing the distance between the slits on the fringe width?
  • A. Fringe width increases
  • B. Fringe width decreases
  • C. Fringe width remains constant
  • D. Fringe width becomes zero
Q. In double-slit diffraction, what is the path difference for constructive interference at the first order maximum?
  • A. λ/2
  • B. λ
  • C.
  • D.
Q. In the context of diffraction, what does the term 'angular width' refer to?
  • A. The angle between the first and second minima
  • B. The angle of incidence
  • C. The angle of reflection
  • D. The angle of diffraction
Q. In the context of diffraction, what does the term 'coherence' refer to?
  • A. The ability of waves to interfere
  • B. The speed of light
  • C. The intensity of light
  • D. The wavelength of light
Q. In the context of diffraction, what does the term 'resolution' refer to?
  • A. The ability to distinguish between two closely spaced objects
  • B. The intensity of the diffracted light
  • C. The wavelength of the light used
  • D. The width of the slit
Q. What happens to the diffraction pattern when monochromatic light is replaced with white light?
  • A. It becomes monochromatic
  • B. It disappears
  • C. It becomes colored
  • D. It remains unchanged
Q. What happens to the diffraction pattern when the distance between the slits in a double-slit experiment is increased?
  • A. Fringe width increases
  • B. Fringe width decreases
  • C. Fringe pattern disappears
  • D. Fringe intensity increases
Q. What happens to the diffraction pattern when the distance to the screen is increased?
  • A. Fringe width decreases
  • B. Fringe width increases
  • C. Fringe intensity increases
  • D. Fringe intensity decreases
Q. What is the condition for the first minimum in single-slit diffraction?
  • A. a = λ
  • B. a = 2λ
  • C. a = λ/2
  • D. a = 3λ
Q. What is the effect of increasing the number of slits in a diffraction grating on the sharpness of the maxima?
  • A. Maxima become sharper
  • B. Maxima become broader
  • C. No effect on sharpness
  • D. Maxima disappear
Q. What is the effect of increasing the slit width in single-slit diffraction?
  • A. Increases the width of the central maximum
  • B. Decreases the width of the central maximum
  • C. No effect on the central maximum
  • D. Increases the intensity of the central maximum
Q. What is the effect of increasing the wavelength of light in a diffraction grating experiment?
  • A. Fringe spacing decreases
  • B. Fringe spacing increases
  • C. No effect on fringe spacing
  • D. Fringe intensity increases
Q. What is the effect of increasing the wavelength of light in a diffraction pattern?
  • A. Fringe spacing decreases
  • B. Fringe spacing increases
  • C. No effect on fringe spacing
  • D. Fringe intensity increases
Q. What is the effect of increasing the wavelength of light in a double-slit diffraction experiment?
  • A. Fringe separation decreases
  • B. Fringe separation increases
  • C. No effect on fringe separation
  • D. Fringe visibility decreases
Q. What is the effect of increasing the wavelength of light on the diffraction pattern produced by a single slit?
  • A. The pattern becomes sharper
  • B. The pattern becomes broader
  • C. The pattern remains unchanged
  • D. The pattern disappears
Q. What is the effect of increasing the wavelength on the diffraction pattern of a single slit?
  • A. Fringes become narrower
  • B. Fringes become wider
  • C. Fringes disappear
  • D. Fringes become brighter
Q. What is the effect of increasing the wavelength on the diffraction pattern?
  • A. Fringes become narrower
  • B. Fringes become wider
  • C. No effect
  • D. Fringes disappear
Q. What is the formula for the angular position of the first minimum in a double-slit diffraction pattern?
  • A. d sin(θ) = mλ
  • B. d sin(θ) = (m + 1/2)λ
  • C. d sin(θ) = (m - 1/2)λ
  • D. d sin(θ) = 2mλ
Q. What is the formula for the angular position of the m-th order maximum in a double-slit experiment?
  • A. d sin θ = mλ
  • B. d cos θ = mλ
  • C. d tan θ = mλ
  • D. d = mλ/sin θ
Q. What is the main difference between diffraction and interference?
  • A. Diffraction involves multiple sources, interference does not
  • B. Interference involves multiple sources, diffraction does not
  • C. Diffraction occurs with sound waves only
  • D. Interference occurs with light waves only
Q. What is the main reason for the appearance of a diffraction pattern when light passes through a narrow slit?
  • A. Interference of light waves
  • B. Refraction of light
  • C. Absorption of light
  • D. Reflection of light
Q. What is the maximum number of diffraction maxima that can be observed for a double-slit experiment with a slit separation of 0.1 mm and light of wavelength 500 nm?
  • A. 5
  • B. 10
  • C. 20
  • D. 50
Q. What is the phenomenon of diffraction primarily associated with?
  • A. Reflection of light
  • B. Bending of waves around obstacles
  • C. Interference of waves
  • D. Polarization of light
Q. What is the phenomenon of diffraction primarily responsible for?
  • A. Bending of light around obstacles
  • B. Reflection of light
  • C. Refraction of light
  • D. Polarization of light
Q. What is the primary reason for the occurrence of diffraction in waves?
  • A. Wave interference
  • B. Wave reflection
  • C. Wave refraction
  • D. Wave nature of light
Q. What is the primary reason for the occurrence of diffraction?
  • A. The wave nature of light
  • B. The particle nature of light
  • C. The speed of light
  • D. The frequency of light
Q. What is the relationship between the number of slits in a diffraction grating and the sharpness of the maxima?
  • A. More slits, sharper maxima
  • B. More slits, broader maxima
  • C. No relationship
  • D. Fewer slits, sharper maxima
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