Home
Class 12
PHYSICS
Consider the optical system shown in fig...

Consider the optical system shown in figure. The point source of ligth S is having wavelength equal to `lambda`. The light is reaching screen only after reflection. For point P to be socond maxima, the value of `lambda` would be (`D gt gt d` and ` d gt gt lambda`)

Text Solution

Verified by Experts

a. At P, `Delta x= ((8d)xx3d)/(D)` ,
" For 2nd maxima, " `Delta x= 2lambda , implies (24d^(2))/(D)= 2lambda`

`implies lambda= (12d^(2))/(D)`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    NARAYNA|Exercise Evaluate yourself - 1|12 Videos

  • WAVE OPTICS

    NARAYNA|Exercise Evaluate yourself - 2|3 Videos

  • WAVE OPTICS

    NARAYNA|Exercise LEVEL - II(H.W)|19 Videos

  • SEMICONDUCTOR ELECTRONICS

    NARAYNA|Exercise ADDITIONAL EXERCISE (ASSERTION AND REASON TYPE QUESTIONS :)|19 Videos

Similar Questions

Explore conceptually related problems

Light of wavelength lambda is incident on a slit of width d and distance between screen and slit is D. Then width of maxima and width of slit will be equal if D is ––

In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the white spot on the screen from O is [Assume lt lt D, lambda lt lt d ]

Two points nonochromatic and coherent sources of light of wavelength lambda each are placed as shown in figure. The initial phase difference between the sources is zero O. (d gt gt d) . Mark the correct statement(s).

Three coherent point sources S_(1),S_(2) and S_(3) are placed on a line perpendicular to the screen as shown in the figure. The wavelength of the light emitted by the sources is lambda. The distance between adjacent sources is d=3lambda The distance of S_(2) from the screen is D (gtgt lambda) . Find the minimum (non zero) distance x of a point P on the screen at which complete darkness is obtained.

Three narrow slits A, B and C are illuminated by a parallel beam of light of wavelength lambda , P is a point on the screen exactly in front of point A. Slit plane is at a distance D from the screen (D gtgt lambda) . It is know that "BP – AP ="(1)/(3) (a) Find d in terms of D and lambda (b) Write the phase difference between waves reaching at P from C and A. (c) If intensity of P due to any of the three slits individu- ally is I_(0) , find the resultant intensity at P.

In a Young's double-slit experiment, if the incident light consists of two wavelengths lambda_(1) and lambda_(2) , the slit separation is d, and the distance between the slit and the screen is D, the maxima due to each wavelength will coincide at a distance from the central maxima, given by

Following figures shows sources S_1 and S_2 that emits light of wavelength lambda in all directions. The sources are exactly in phase and are separated by a distance equal to 1.5lambda . If we start at the indicated start point and travel along path 1 and 2, the interference produce a maxima all along

A driver is riding a car with velocity v_c between two vertical walls on a horizontal surface as shown in figure.A source of sound of frequency 'f' is situated on the car. ( v_c lt lt v , where v is the speed of sound in air ) Consider the sound wave observed by the driver directly from car has a wavelength lambda_1 and the sound wave after reflection from wall-1 observed by the driver has wavelength lambda_2 then (lambda_1-lambda_2)/(lambda_1+lambda_2) is :

NARAYNA-WAVE OPTICS-Example
  1. A ray of light of internsity I is incident on a parallel glass slab at...

    Text Solution

    |

  2. In YDSE if a slab whose refractive index can be varied is placed in fr...

    Text Solution

    |

  3. Consider the optical system shown in figure. The point source of ligth...

    Text Solution

    |

  4. Two coherent point source S(1) and S(2) vibrating in phase emit light ...

    Text Solution

    |

  5. A parallel beam of light of wavelength 500 nm falls on a narrow slit ...

    Text Solution

    |

  6. A screen is placed 50cm from a single slit, which is illuminated with ...

    Text Solution

    |

  7. In a single slit diffraction experiment first minima for lambda1 = 660...

    Text Solution

    |

  8. Two slits are one millimeter apart and the screen is placed one meter ...

    Text Solution

    |

  9. For what distance is ray optics a good approximation when the aperture...

    Text Solution

    |

  10. Assume that light of wavelength 6000 Å is coming from a star. What is ...

    Text Solution

    |

  11. When light of a certain wavelength is incident on a plane surface of ...

    Text Solution

    |

  12. Unpolarized light falls on two polarizing sheets placed one on top of ...

    Text Solution

    |

  13. Unpolarized light of intensity 32 Wm^(-3) passes through three polariz...

    Text Solution

    |

  14. Disuss the intensity of transmitted light when a polaroid sheet is rot...

    Text Solution

    |

  15. A plane wavefront is incident at an angle of 37^(@) with horizontal a ...

    Text Solution

    |

  16. Yellow light with wavefront 0.5 mum is air surface refraction in a med...

    Text Solution

    |

  17. With what speed should a star move with respect to us so that the beam...

    Text Solution

    |

  18. A galaxy moving with speed 300km/s shows blue shift. At what wavelengt...

    Text Solution

    |

  19. What speed should a galaxy move with respect to us so that the sodium ...

    Text Solution

    |

  20. Light waves form two coherent source having intensity ration 81:1 prod...

    Text Solution

    |