Home
Class 12
PHYSICS
A prism has refracting angle of 60° and ...

A prism has refracting angle of `60°` and its material has refractive index 1.5 and 1.6 for red and violet light respectively. A parallel beam of white light is incident on one face of the prism such that the red light undergoes minimum deviation. Find the angle of incidence (i) and the angular width `(theta)` of the spectrum obtained.
Given: `sin (49^(@)) = 0.75^(@), sin(28^(@)) = 0.47, sin(32^(@)) = 0.53, sin(58^(@)) = 0.85`

Text Solution

Verified by Experts

The correct Answer is:
`i=49^(@) ; theta = 9^(@)`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    ARIHANT|Exercise Level 3|9 Videos

  • GEOMETRICAL OPTICS

    ARIHANT|Exercise Level 3|9 Videos

  • ELECTROSTATICS

    ARIHANT|Exercise Level 3|59 Videos

  • MAGNETIC EFFECT OF CURRENT

    ARIHANT|Exercise Magnetic effect of Current|45 Videos

Similar Questions

Explore conceptually related problems

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white light is incident on one face at an angle of incident, which gives minimum deviation for red light. Find : (a) the angle of incidence (b) angular width of the spectrum (c) the length of the spectrum if it is focussed on a screen by lens focal length 100 cm . [Use: sin (49.7^(@)) =0.760, sin (31.6^(@))=0.520 , sin (28.4^(@))=0.475, sin (56^(@))=0.882 , pi =22//7 ]

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angular width of the spectrum is :

A ray of light is incident on a 60^(@) prism at the minimum deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is-

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angle of incidence at the prism is :

" A prism of refractive angle 4^(@ and refractive index is "1.5" .What is the deviation in incident light "

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The length of the spectrum if it is focussed on a screen by a lens of focal length 100 cm is :

A ray of light incident at an angle of 48^(@) is refracted through a prism in its position of minimum deviation. The angle of prism is 60^(@) . Calculate the refractive index of the material of the prism. (sin 48^(@) = 0.74, sin 30^(@) = 0.50)

A prism of angle 60^(@) is made of glass of refractive index 1.50 for red and 1.56 for violet. Find the angular separation of these rays when a narrow pencil of composite light is incident at minimum deviation.

ARIHANT-GEOMETRICAL OPTICS-Level 2
  1. An isosceles glass prime ( refractive index =(3)/(2)) has its base j...

    Text Solution

    |

  2. Three right angled prisms are glued as shown in the figure. An inciden...

    Text Solution

    |

  3. A prism has refracting angle of 60° and its material has refractive in...

    Text Solution

    |

  4. A converging beam of light is incident on a right angled isosceles pri...

    Text Solution

    |

  5. An equilateral prism is made of glass whose refractive index for red a...

    Text Solution

    |

  6. The plot of deviation (delta) vs angle of incidence (i) for a prism is...

    Text Solution

    |

  7. For a glass prism the plot of deviation (delta) vs angle of incidence ...

    Text Solution

    |

  8. Two identical equilat- eral glass (refractive index = sqrt(2)) prisms ...

    Text Solution

    |

  9. An equilateral prism of refractive index mu = (4)/(sqrt(3)) is kept i...

    Text Solution

    |

  10. A rectangular glass block (mu = 1.5) is on top of a sheet of paper on ...

    Text Solution

    |

  11. A light ray travelling in a medium of refractive index mu(1) is incide...

    Text Solution

    |

  12. The Figure shows the equatorial circle of a glass sphere of radius R h...

    Text Solution

    |

  13. On a hot summer day in a desert the refractive index of the atmosphere...

    Text Solution

    |

  14. The angle of minimum deviation caused by a prism is equal to the angle...

    Text Solution

    |

  15. A beam of light rays converges to a point O on x-axis as shown. The an...

    Text Solution

    |

  16. A spherical surface of radius R separates air from a medium of refract...

    Text Solution

    |

  17. A point object O is placed at a distance of 41 cm from a convex lens o...

    Text Solution

    |

  18. A man is Standing on the peak of a mountain and finds that evening sun...

    Text Solution

    |

  19. A light ray 1 after passing through a lens kept in air, goes along pat...

    Text Solution

    |

  20. An observer holds in front of himself a thin equi convex lens. R is th...

    Text Solution

    |