Home
Class 12
PHYSICS
A ray of light is incident at an angle o...

A ray of light is incident at an angle of `45^@` (ralative to the normal) on a thin film of a liquid with an index of refraction of `sqrt(2)`. Assuming that the medium of both sides of the film is air, find the minimum thickness of the film required for constructive interference in the reflected light for sodium light of wavelenght 600 nm.

A

122 nm

B

212 nm

C

173 nm

D

320 nm

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 40

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

  • NTA JEE MOCK TEST 42

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

Our disscusssion of the techniques for determining cosntructive and destructive by reflection from a thin film in air has been confused to rays striking the film a nearly the normal incidence.Assume that a ray is incident at an angle of 45^(@) (relative to the normal ) on a film with an index of refraction of sqrt(2) .Calculate the minimum thickness fro constructive interference for issodium light of wavelength 600nm .

Refractive index of a thin soap film of a uniform thickness is 1.34. Find the smallest thickness of the film that gives in interference maximum in the reflected light when light of wavelength 5360 Å fall at normal incidence.

What is the minimum thickness of thin film required for constructive interference in the reflected light through it ? (Given, the refractive index of the film =1.5, wavelength of the lilght incident on the film =600 nm.

What is the minimum thickness of a thin film (mu=1.2) that results in constructive interference in the reflected light? If the film is illuminated with light whose wavelength in free space is lambda=500nm ?

Refractive index of a thin soap film of a uniform thickness is 1.38. The smallest thickness of the film that gives an interference maxima in the reflected light when light of wavelength 5520 Å falls at normal incidence is

A ray of light is incident at an angle of incidence 45^@ on an equilateral prism and emerge at an angle 45^@ then the refractive index of the medium of the prism is:

A ray of light in air is incident at an angle of 45^(@) on the surface of separation of a medium. It is refracted in the medium at an angle of 30^(@) . What is the velocity of light in that medium ?

A light of wavelength 5890Å falls normally on a thin air film. The minimum thickness of the film such that the film appears dark in reflected light is

Calculate the minimum thickness of a soap bubble film (mu=1.33) that results in constructive interference in the reflected light if the film is illuminated with light whose wavelength in free space is lambda=600nm .

NTA MOCK TESTS-NTA JEE MOCK TEST 41-PHYSICS
  1. An ideal monoatomic gas undergoes an expansion from state A to state B...

    Text Solution

    |

  2. Two long coaxial solenoids of radius R and 2R have equal number of tu...

    Text Solution

    |

  3. In an experiment to determine the resistance of a galvanometer by half...

    Text Solution

    |

  4. A particle of mass'm' is projected with velocity v(0) at an angle 'alp...

    Text Solution

    |

  5. A thin uniform equilateral plate rests in a vertical plane with one of...

    Text Solution

    |

  6. The intensity of gamma - radiation from a given source is I. On passin...

    Text Solution

    |

  7. A photoelectric surface is illuminated successively by monochromatic l...

    Text Solution

    |

  8. The ratio of surface tensions of mercury and water is given to be 7.5 ...

    Text Solution

    |

  9. Light is incident normally on face AB of a prism as shown in Figure. A...

    Text Solution

    |

  10. A spool of mass M = 3 kg and radius R = 20 cm has an axle of radius r ...

    Text Solution

    |

  11. A zener diode has a contact potential of 1 V in the absence of biasi...

    Text Solution

    |

  12. Two rods A and B of identical dimensions are at temperature 30^(@)C. I...

    Text Solution

    |

  13. If L,C and R denote the inductance, capacitance and resistance respect...

    Text Solution

    |

  14. A ray of light is incident at an angle of 45^@ (ralative to the normal...

    Text Solution

    |

  15. Two sound waves of wavelengths 98cm and 100cm arrive at the same point...

    Text Solution

    |

  16. The figure shows an RC circuit with a parallel plate capacitor. Before...

    Text Solution

    |

  17. A power transmission line feeds input power at 2400V to a step-down tr...

    Text Solution

    |

  18. The electric potential in a region is given as V = -4 ar^2 + 3b, where...

    Text Solution

    |

  19. A metal is heated in a furnace where a sensor is kept above the metal ...

    Text Solution

    |

  20. A weightless rigid rod with a small iron bob at the end is hinged at p...

    Text Solution

    |