Home
Class 12
PHYSICS
A bird in air looks at a fish directly b...

A bird in air looks at a fish directly below it inside in a transparent liquid in a tank. If the distance of the fish as estimated by the bird is `h_1` and that of the bird as estimated by the fish is `h_2,` then the refractive index of the liquid is

A

`h_2/h_1`

B

`h_1/h_2`

C

`(h_1+h_2)/(h_1-h_2)`

D

`(h_1-h_2)/(h_1+h_2)`

Text Solution

Verified by Experts

The correct Answer is:
A

`h_1=x+y/mu`…(i)
`h_2=y+mux`……..(ii)
Eq.(i) can be written as
`(mux+y)/mu=h_1 or (h_2)/mu=h_1 or mu=h_2/h_1`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise Single Correct Option|3 Videos

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise more than one correct option|1 Videos

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise Subjective Questions|8 Videos

  • REFLECTION OF LIGHT

    DC PANDEY|Exercise Subjective|9 Videos

  • SEMICONDUCTORS

    DC PANDEY|Exercise Subjective|12 Videos

Similar Questions

Explore conceptually related problems

A bird in air looks at a fish vertically below it and inside water. h_(1) is the height of the bird above the surface of water and h_(2) , the depth of the fish below the surface of water. If refractive index of water with respect to air be mu , then the distance of the fish as observed by the bird is

Find out the following in the figure shown below : (a) The apparent speed of the fish as observed by the bird (b) The apparent speed of the bird as observed by the fish

A fish in water (refractive index n ) looks at a bird vertically above in the air. If y is the height of the bird and x is the depth of the fish from the surface, then the distance of the bird as estimated by the fish is

Find out the following in the figure shown below : (a) The apparent distance of the fish from the surface as observed by the bird (b) The apparent distance of the bird from the surface as observed by the fish

A fish in a lake (refractive index 4//3 for water ) is viewed through a convex lens. From water surface, the lens is placed in air at half of the distance of the fish from the water surface, so that the image is formed at the fish itself. The focal length of the lens is how many times the depth of fish in water?

A bird in air is at a height ‘y’ from the surface of water. A fish is at a depth ‘x’ below the surface of water. The apparent distance of fish from the bird is (The refractive index of water is n )

Consider the situation as shown in the diagram. Find the distance between bird and fish as seen by (a) bird and (b) fish

The back wall of an aqaurium is a mirror that is 30 cm away from the fron wall. The sides to the tank are negligibly thin. A fish is swimming midway between the front and back walls. a. An image of the fish appears behind the mirror. How far dows this image appear to be from the front wall of the aquarium? b. Would the refractive index of the liquid have to be larger or smaller in order for the image of the fish to appear in front of the mirror, rather than behind it? Find the limiting value of this refractive index. Initially, water is there in aquarium having refractive index 4//3

DC PANDEY-REFRACTION OF LIGHT-Level 2 Single Correct
  1. An object is kept at a distance of 16 cm from a thin lens and the imag...

    Text Solution

    |

  2. A ray of light makes normal incidence on the diagonal face of a right ...

    Text Solution

    |

  3. A bird in air looks at a fish directly below it inside in a transparen...

    Text Solution

    |

  4. Diameter of the flat surface of a circular plano-convex lens is 6 cm a...

    Text Solution

    |

  5. When the object is at distance mu1 and mu2 from the optical centre of ...

    Text Solution

    |

  6. Two convex lenses placed in contact form the image of a distant object...

    Text Solution

    |

  7. Refractive index of a prism is sqrt(7//3) and the angle of prism is 60...

    Text Solution

    |

  8. A plano-convex thin lens of focal length 10 cm is silvered at its plan...

    Text Solution

    |

  9. There is a small black dot at the centre C of a solid glass sphere of ...

    Text Solution

    |

  10. In the figure ABC is the cross-section of a right angled prism and BCD...

    Text Solution

    |

  11. If a symmetrical bi-concave thin lens is cut into two identical halves...

    Text Solution

    |

  12. If an object is placed at A(OAgtf), where f is the focal length of the...

    Text Solution

    |

  13. An object is seen through a glass slab of thickness 36 cm and refracti...

    Text Solution

    |

  14. How much water should be filled in a container of height 21 cm, so tha...

    Text Solution

    |

  15. Optic axis of a thin equi-convex lens is the x-axis. The co-ordinates ...

    Text Solution

    |

  16. A thin plano-convex lens acts like a concave mirror of radius of curva...

    Text Solution

    |

  17. A thin lens, made of glass of refractive index 3//2, produces a real a...

    Text Solution

    |

  18. The maximum value of refractive index of a prism which permits the tra...

    Text Solution

    |

  19. A glass slab of thickness 4 cm contains the same number of waves as 5 ...

    Text Solution

    |

  20. If the optic axis of convex and concave lenses are separated by a dist...

    Text Solution

    |