Home
Class 11
PHYSICS
A small bulb is placed at the bottom of ...

A small bulb is placed at the bottom of a tank containing water to a depth of 80cm. What is the area of the bulb can emerge out? Refractive index of water is 1.33. (Consider the bulb to be a point source.)

A

3.13 `m^(2)`

B

1.43 `m^(2)`

C

2.61`m^(2)`

D

`0.88 m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|88 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

  • SCALARS AND VECTORS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

The time taken by the sunlight to reach the bottom of a tank of depth 4.5 m filled completely with water is …………. Ns. The refractive index of water is 4/3 .

A tank is filled with water to height of 12.5 cm. The apparent depth of a needl lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 upto the same height, by what distance would the microscope have to be moved to focus on the needle again?

Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelengths ,frequency and speed of refracted light ? Refractive index of water is 1.33

Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelengths ,frequency and speed of reflected light ? Refractive index of water is 1.33.

A man stnading in a swimming pool looks at a stone lying at the bottom. The depth of the swimming pool is h. At what distance from the surface of water is the image of the stone formed? (Line of vision is normal, Refractive index of water is n)

The refractive index of a piece of glass of 1.5 and it accommodates as many waves as are accommodated in 18 cm width of water column.If the refractive index of water 1.33 then the thickness of glass piece will be-

A water barrel having water upto a depth d is placed on a table of height h . A small hole is made on the wall of the barrel at its bottom . If the stream of water coming out of the hole falls on the ground at a horizontal distance R from the barrel, then the value of d is

A cylindrical tank is filled with water to a level of 4 m. A hole is opened at a height of 60 cm from bottom. The ratio of the area of the hole to that at cross-sectinal area at cylinder is 0.2. Then the velocity with which water is coming out is (g = 10m//s^(2))

A glass slab of thickness 2.5 cm having refractive index 5//3 is kept on an ink spot. A transparent beaker of very thin bottom containing water of R.1. 4//3 upto 8 cm is kept on the glass block. Calculate the apparent depth of the ink spot, when seen from outside air.

TARGET PUBLICATION-REFRACTION OF LIGHT -CRITICAL THINKING
  1. A ray of light passing through a prism having refractive index sqrt(2)...

    Text Solution

    |

  2. The distance travelled by a ray of light in two media, in the same tim...

    Text Solution

    |

  3. A small bulb is placed at the bottom of a tank containing water to a d...

    Text Solution

    |

  4. A tank is filled with water to height of 12.5 cm. The apparent depth o...

    Text Solution

    |

  5. A vessel of depth 2d cm is half filled with liquid of refractive inde...

    Text Solution

    |

  6. A layer of oil 3 cm thick is flowing on a layer of coloured wtater 5 c...

    Text Solution

    |

  7. In the given figure, the principal section of a glass prism is an isos...

    Text Solution

    |

  8. The deviation produced by a thin glass prism placed in air, when immer...

    Text Solution

    |

  9. A fish at a depth of sqrt(7) cm bleow the surface of water sees the ou...

    Text Solution

    |

  10. A ray of light is incident normally normallyh on one of the faces of a...

    Text Solution

    |

  11. A light ray is incident normally on the face AB of a right-angled pris...

    Text Solution

    |

  12. On heating a liquid, the refractive index generally

    Text Solution

    |

  13. If hat(i) denotes a unit vector along incident light ray, hat( r) a un...

    Text Solution

    |

  14. The fine powder of a coloured glass is seen as

    Text Solution

    |

  15. A circular disc of which 2//3 part is coated with yellow and 1//3 part...

    Text Solution

    |

  16. Light enters at an angle of incidence in a transparent rod of refracti...

    Text Solution

    |

  17. A glass prism (mu = 1.5) is dipped in water (mu = 4//3) as shown in fi...

    Text Solution

    |

  18. An isosceles prism of angle 120^(@) has a refractive index of 1.44. Tw...

    Text Solution

    |

  19. When light is incident on a medium at angle i and refracted into a sec...

    Text Solution

    |

  20. Immixable transparent liquids A,B,C,D and E are placed in a rectangula...

    Text Solution

    |