Home
Class 12
PHYSICS
Refractive indices of a prism material f...

Refractive indices of a prism material for two wavelengths are 1.66 and 1.64.The dispersive power is

A

0.02

B

0.012

C

0.01

D

0.03

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • UNIT TEST -06

    MODERN PUBLICATION|Exercise EXERCISE|461 Videos

  • TEXUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|195 Videos

  • UNIT TEST -07

    MODERN PUBLICATION|Exercise EXERCISE|154 Videos

Similar Questions

Explore conceptually related problems

Find the angle of dispersion between the red and violet colours produced by a flint glass prism of refracting angle 60^@ .Refrative indices of the prism for red and violet colours are 1.622 and 1.663 respectively.

Define dispersive power of a prism.

A beam of light of wavelength 400 nm is incident normally on a right angled prism as shown in fir.2.45. . It is observed that the light just grazes long the surface AC after falling on it.Give that there fractive index of the material of the prism varies with the wavelength as per the relation. mu=1.2 + b/(gamma^2) Calculate the value of b and the refractive index of the prism material for a wavelength gamma = 500 nm .Given theta=sin^(-1) 0.625 .

The refractive indices of the crown glass for blue and red light are 1.51 and 1.49 respectively and those of the flint glass are 1.77 and 1.73 respectively.An isosceles prism of angle 6^@ is made of crown glass.A beam of white light is incident at a small angle on this prism .The other flint glass isosceles prism is combined with the crown glass prism such that there is no deviation of teh incident light.Determine the angle of the flint glass prism.Calculate the net dispersion of the combined system.

Find the angle fo a prism of dispersive power 0.021 and refractive index 1.53 to form an achromatic combination with prism of angle 4.2^@ and dispersive power 0.045 having refractive index 1.65.Find the resultant deviation.

Three light rays red, green and blue are incident on a right angled prism 'abc' at face 'ab'. The refractive indices of the material of the prism for red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively. Out of the three which colour ray will emerge out of face 'ac'? justify your answer. Trace the out of the face 'ac'? Justify your answer. Trace the path of these rays after passing through face 'ab'.

The refractive index of a material of a concave lens is n_1 . It is immersed in medium of refractive index n_2 . A parallel beam of light if incident on the lens. Trace the path of the emergent lays when n_2 > n_1

The refractive index of a material of a concave lens is n_1 . It is immersed in medium of refractive index n_2 . A parallel beam of light if incident on the lens. Trace the path of the emergent lays when n_2 = n_1

The refractive index of a material of a concave lens is n_1 . It is immersed in medium of refractive index n_2 . A parallel beam of light if incident on the lens. Trace the path of the emergent lays when n_2 < n_1 .

Two monochromatic rays of light are incident normally on the face AB of an isosceles right-angled prism ABC.The refractive indices of the glass prism for the two rays 1 and 2 are respectively 1.35 and 1.45[Fig.2.76]Trace the path of these rays after entering through the prism .

MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A prism splits a beam of white ligth into its seven constituent colour...

    Text Solution

    |

  2. A narrow beam fo white ligth passes throuugh a glass slab havig paral...

    Text Solution

    |

  3. Refractive indices of a prism material for two wavelengths are 1.66 an...

    Text Solution

    |

  4. When a glass prism is placed inside water,its dispersive power

    Text Solution

    |

  5. During dispersion of white light by prism placed in air,

    Text Solution

    |

  6. The figure shows the view through the eye-piece of a prism spectromete...

    Text Solution

    |

  7. One cannot see through fog, because:

    Text Solution

    |

  8. The sky would appear red instead of blue,if

    Text Solution

    |

  9. What is the cause of formation of a rainbow?

    Text Solution

    |

  10. Which fo the following statement is correct? (i)Line spectra is chrara...

    Text Solution

    |

  11. Fraunhofer spectrum is a

    Text Solution

    |

  12. In which one of the following regions of teh electromagnetic spectrm w...

    Text Solution

    |

  13. In case of lens,which of the following quantities depend on the wavele...

    Text Solution

    |

  14. A converging achromat lens is to be made by placeing two lenese in con...

    Text Solution

    |

  15. A combination is made of two lenses of focal lengths f and f' and disp...

    Text Solution

    |

  16. When we see an object,the image formed on the retina is

    Text Solution

    |

  17. The focal length of the normal eye-lens is approximaterly

    Text Solution

    |

  18. The distances of the human eye-lens from the retina is x.For a normal ...

    Text Solution

    |

  19. Why is a normal eye not able to see clearly the objects placed closer ...

    Text Solution

    |

  20. When we view objects lying at differnt distances from the eye,which fo...

    Text Solution

    |