2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Wave Optics / तरंग प्रकाशिकी

JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Mock Test - Wave Optics

  • question_answer
    A single slit of width a is illuminated by violet light of wavelength 400 nm and the width of the diffraction pattern is measured as y. When half of the slit width is covered and illuminated by yellow light of wavelength 600 nm, the width of the diffraction pattern is

    A) The pattern vanishes and the width is zero

    B) \[y/3\]

    C) 3y

    D) None of these

    Correct Answer: C

    Solution :

    [c] In single slit experiment, width of central maxima \[(y)=2\lambda D/d\] \[\Rightarrow \frac{y'}{y}=\frac{\lambda '}{d'}\times \frac{d}{\lambda }=\frac{600}{d/2}\times \frac{d}{400}\Rightarrow y'=3y\]


You need to login to perform this action.
You will be redirected in 3 sec spinner