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Set 9 of 9 · Questions 241-243 of 243

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NEET Physics · Wave Optics · Set 9 (Q241-243)

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  1. 241.
    In a double-slit experiment, green light falls on a double slit having a separation of and a width of The number of bright fringes between the first andthe second diffraction minima is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  2. 242.
    The light waves from two coherent sources have same intensity ==. In interference pattern the intensity of light at minima is zero. What will be the intensity of light at maxima?
    1. (1)
    2. (2)
    3. (3)5
    4. (4)4
  3. 243.
    Two coherent point sources and are separated by a small distance 'd' as shown. The fringes obtained on the screen will be :
    1. (1)points
    2. (2)straight lines
    3. (3)semi-circles
    4. (4)concentric circles