Home
Class 12
PHYSICS
A ray falls on a prism ABC(AB=BC) and tr...

A ray falls on a prism `ABC(AB=BC)` and travels as shown in adjoining figure.The minimum refraction index of the prism material should be -

A

`4//3`

B

`sqrt2`

C

`3//2`

D

`sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
B

Since `AB=BC`, `/_BAC=/_ACB=45^@`
T.I.R. takes place at AB and BC i.e.
`45^@geC`
`sin45^@gesinC`
`1/sqrt2ge1/mu`
`mugesqrt2`
`mu_(min)=sqrt2`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT BY PLANE SURFACES

    CP SINGH|Exercise Exercises|110 Videos

  • REFRACTION AT SPHERICAL SURFACES

    CP SINGH|Exercise EXERCISES|105 Videos

  • SEMICONDUCTORS

    CP SINGH|Exercise Exercises|140 Videos

Similar Questions

Explore conceptually related problems

A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be

Find the angle of deviation suffered by the light ray shown in figure. The refractive index mu = for the prism material.

A ray of light is incident normally on one face of a prism as shown in figure. The refractive index of the material of the prism is (5)/(3) and the prism is immersed in water of refractive index (4)/(3) , then

Find the net deviation produced in the incident ray for the optical instrument shown in figure. (Take refractive index of the prism material as 2.)

A ray of light falls on an equilateral prism ABC as shown. Face AC of the prism is polished. What is the refractive index mu of the material of the prims so that when the ray falls on face BC (after reflecting from AC) it makes an angle 60^(@) with it.?

A ray OP of monochromatic light is incident on the face AB of prism ABCD mear vertex B at an incident angle of 60degree (see figure). If the refractive index of the material of the prism is sqrt3 , which of the following is (are) are correct?

When a ray of light falls on a prism of angle 48^(@) , it suffers minimum deviation. Refractive index of the material of prism is 1.6 . The angle of incidence is nearly

The refractive angle of a prism is 60^(@) . What is the angle of minimum deviation, if the refractive index of the material of the prism is sqrt2 ?

When light rays are incident on a prism at an angle of 45^(@) , the minimum deviation is obtained. If refractive index of the material of prism is sqrt(2) , then the angle of prism will be

CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
  1. A ray of light is incident normally on one face of an equilateral pris...

    Text Solution

    |

  2. A prism having refractive index sqrt2 and refractive angle 30^@ has on...

    Text Solution

    |

  3. A ray falls on a prism ABC(AB=BC) and travels as shown in adjoining fi...

    Text Solution

    |

  4. A glass prism of refractive index 1.5 is immersed in water (refractive...

    Text Solution

    |

  5. A prism of angle 60^@ deviates a ray of light through 32^@ for two ang...

    Text Solution

    |

  6. The maximum value of index of refraction of a material of a prism whic...

    Text Solution

    |

  7. Two beams of red and violet colours are made to pass separately throug...

    Text Solution

    |

  8. When a glass prism of refracting angle 60^(@) is immersed in a liquid ...

    Text Solution

    |

  9. Angle of prism is A and its one surface is silvered. Light rays fallin...

    Text Solution

    |

  10. Three prisms 1, 2 and 3 have the prism angle A = 60^(@), but their ref...

    Text Solution

    |

  11. A ray of light is incident at small angle I on the surface of prism of...

    Text Solution

    |

  12. A light ray is incident on a prism in minimum deviation position and s...

    Text Solution

    |

  13. An isosceles prism of angle 120degree has a refractive index 1.44. Two...

    Text Solution

    |

  14. Two parallel light rays are incident at one surface of a prism of refr...

    Text Solution

    |

  15. P is small angled prism of angle 3^(@) made of a material of refractiv...

    Text Solution

    |

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

    Text Solution

    |

  17. A beam of white light is incident on a hollow prism of glass. Then

    Text Solution

    |

  18. For a small angled prism, angle of prism A of minimum deviation(delta)...

    Text Solution

    |

  19. The graph between angle of deviation (delta) and angle of incidence (i...

    Text Solution

    |

  20. A narrow beam of white light enters slab having parallel faces.

    Text Solution

    |