Home
Class 12
PHYSICS
A ray of light travelling in a rarer med...

A ray of light travelling in a rarer medium strikes a plane boundary between the rarer medium and a denser medium at an angle of incidence 'i' such that the reflected and the refracted rays are mutually perpendicular. Another ray of light of same frequency is incident on the same boundary from the side of denser medium. Find the minimum angle of incidence at the denser-rarer boundary so that the second ray is totally reflected

Text Solution

Verified by Experts

`theta_C = sin^(-1) ( cot i)`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    AAKASH SERIES|Exercise PROBLEMS ( LEVEL-I)|57 Videos

  • PRACTICAL PHYSICS

    AAKASH SERIES|Exercise LECTURE SHEET LEVEL-II (ADVANCED) Linked Comprehension Type Questions|4 Videos

  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE - III|3 Videos

Similar Questions

Explore conceptually related problems

A ray of light from a denser medium strikes a rarer medium at an angle of incidence i = tan^( -1)(1//2) . If the reflected and the refracted rays are mutually perpendicular to each-other, what is the value of the critical angle in degree?

Light from a denser medium 1 passes to a rarer medium 2. When the angle of incidence is theta the partially reflected and refracted rays are mutually perpendicular. The critical angle will be

Unpolarized light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to eachother ?

Unpolarized light is incident on a plane glass surface. The angle of incidence so that reflected and refracted rays and perpendicular to each other, then

A light ray is incident fromt a denser medium on the boundary separating it from a rarer medium at an angle of incidence equal to the critical angle. What is the angle of refraction for the ray ?

A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is :

When a light wave in a rarer medium is reflected from the surface of an optically denser medium, it suffers a phase change of (in radian)

When a ray of light travels from an optically less denser medium to an optically more denser medium, the angle of incidence is always less than angle of refraction.

When a ray of light travles from an optically more denser medium to an optically less denser medium, the angle of incidence is always _____ than the angle of refraction.

A ray of light is incident at an angle i from denser to rare medium. The reflected and the refracted rays are mutually perpendicular. The angle of reflection and the angle of refraction are respectively r and r'. Then the critical angle will be:

AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-II)
  1. A pile 4m high driven into the bottom of a lake is 1m above the wat...

    Text Solution

    |

  2. A point object is placed at a distance of 20 cm from a glass slab, H=1...

    Text Solution

    |

  3. A ray of light travelling in a rarer medium strikes a plane boundary b...

    Text Solution

    |

  4. A small object of height 0.5 cm is placed in front of a convex surface...

    Text Solution

    |

  5. A paperweight in the form of a hemisphere of radius 3.0 cm is used to ...

    Text Solution

    |

  6. A convex glass lens ( mu = 1.5 ) produces a real image of an object. ...

    Text Solution

    |

  7. Two plano-convex lens of glass of refractive index 1.5 have radii of c...

    Text Solution

    |

  8. A rectangulat block of refractive index mu is placed on a printed page...

    Text Solution

    |

  9. A ray is incident on prism at an angle i with normal. When it comes ou...

    Text Solution

    |

  10. The dispersive power of crown and flint glasses are 0.02 and 0.04 resp...

    Text Solution

    |

  11. Two prisms of identical geometrical shape are combined with their refr...

    Text Solution

    |

  12. A thin prism of crown glass (mur=1.515, muv=1.525) and a thin prism o...

    Text Solution

    |

  13. Two small angled prisms A and B deviate the blue rays by 7^@ and 9^@ a...

    Text Solution

    |

  14. A beam of light converges towards a point O, behind a convex mirror of...

    Text Solution

    |

  15. When an object is placed at a distance of 25 cm from a mirror, the mag...

    Text Solution

    |

  16. An object is placed between a plane mirror and a convex mirror as show...

    Text Solution

    |

  17. A plane mirror and a concave mirror are arranged as shown in figure an...

    Text Solution

    |

  18. Describe the image in convex mirror, of the image of rod PQ in the pla...

    Text Solution

    |

  19. The u-v curve in a concave mirror as shown in figure. Find the f...

    Text Solution

    |

  20. An illuminated point object O is kept 20 cm from a thin convex lens L(...

    Text Solution

    |