A single slit diffraction pattern is obtained using a beam of red light. If red light is replaced by blue light then

• A

  the diffraction pattern will disappear
• Correct answer
  B

  fringes will become narrower and crowded together
• C

  fringes will become broader and will be further apart
• D

  there is no change in the diffraction pattern

Hence, the correct answer is option: 'B'.