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

JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Critical Thinking

  • question_answer
    In Young's double slit experiment the y-coordinates of central maxima and 10th maxima are 2 cm and 5 cm respectively. When the YDSE apparatus is immersed in a liquid of refractive index 1.5 the corresponding y-coordinates will be

    A)            2 cm, 7.5 cm

    B)            3 cm, 6 cm

    C)            2 cm, 4 cm

    D)            4/3 cm, 10/3 cm

    Correct Answer: C

    Solution :

               Fringe width b µ l. Therefore, l and hence b decreases 1.5 times when immersed in liquid. The distance between central maxima and 10th maxima is 3 cm in vacuum. When immersed in liquid it will reduce to 2 cm. Position of central maxima will not change while 10th maxima will be obtained at y = 4cm.


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