Home
Class 12
PHYSICS
Answer the following questions : Does ...

Answer the following questions :
Does the apparent depth of a tank of water change if viewed obliquely ? If so, does the apparent depth increase or decrease ?

Text Solution

Verified by Experts

(d) The apparent depth for oblique viewing decreases from its value for near-normal viewing. Convince yourself of this fact by drawing ray diagrams for different positions of the observer.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT TAMIL|Exercise EXERCISES|40 Videos

  • OPTICS

    NCERT TAMIL|Exercise EVALUATION (Numerical Problems)|10 Videos

  • RECENT DEVELOPMENTS IN PHYSICS

    NCERT TAMIL|Exercise Evaluation (I. Multiple Choice Questions)|10 Videos

Similar Questions

Explore conceptually related problems

Answer the following questions . a. The earth's magnetic field varies from point is space. Does it also change with time ? It so , on what time scate does it change appreciably ? b. The earth's core is known to contain iron. Yet geologists do not regard this as a source of the earth's magnetism why ? c. The charged currents in the outer conducting regions of the earth's core are thought to be responsible for earth's magnetism . What might be the ' battery ' (i.e., the source of energy) to sustain these currents ? d. The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth's field in such distant past ? e. The earth's field departs from its dipole substantially at large distances (greater than about 30,000 km) what agencies may be responsible for this distortion ? f. Interstellar space has an extremely weak magnetic field of the order of 10^(-12) T, Can such a weak field be of any significant consequence ? Explain. [Note : Exercise 2 is meant mainly to arouse your curiosity . Answers to some question above are tentative or unknown . Brief answers wherever possible are given at the end . For details , you should consult a good text on geomagnetism.]

Read the following paragraph carefully and answer the following question . If the heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy . The change in temperature continues till the temperatures of both the the object attain the same value . In the process, the cold object gains heat energy and the hot objet lose heat energy . If the system of both the object is isolated from the environment by keeping it inside a heat resistance box ( meaning that the energy exchange takes place between the two object only), then no energy can flow from inside the box or come into the box. Heat is transferred from where to where ?

Read the following paragraph carefully and answer the following question . If the heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy . The change in temperature continues till the temperatures of both the the object attain the same value . In the process, the cold object gains heat energy and the hot object lose heat energy . If the system of both the object is isolated from the environment by keeping it inside a heat resistance box ( meaning that the energy exchange takes place between the two object only), then no energy can flow from inside the box or come into the box. How will you state the principle briefly ?

Read the following paragraph carefully and answer the following question . If the heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy . The change in temperature continues till the temperatures of both the the object attain the same value . In the process, the cold object gains heat energy and the hot objet losec heat energy . If the system of both the object is isolated from the environment by keeping it inside a heat resistance box ( meaning that the energy exchange takes place between the two object only), then no energy can flow form inside the box or come into the box. Which property of the substance measured using principle of heat exchange?.

Answer the following questions from the diagram: (a) How many times does the light undergo refractions ? (b) Which two angles are equal ?

Read the following paragraph carefully and answer the following question . If the heat is exchanged between a hot and cold object,the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy . The change in temperature continues till the tempertaures of both the object attain the same value . In the process, the cold object gains heat energy and the hot object lose heat energy . If the system of both the object is isolated form the environment by keeping it inside a heat resistance box ( meaning that the energy exchange takes place between the two object only), then no energy can flow from inside the box or come into the box. Which principle do we learn about from this process ?

A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm filled completely with water. Consider the ray leaving the vessel through a corner. Suppose this ray and the ray along the axis of the vessel are used to trace the image. Find the apparent depth of the image and the ratio of real depth to the apparent depth under the assumptions taken. Refractive index -of water = 1-33.

Observe the animal below and answer the following questions. Does this animal have neurons?

NCERT TAMIL-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISES
  1. Answer the following questions : Does the apparent depth of a tank o...

    Text Solution

    |

  2. Answer the following questions : Does the apparent depth of a tank o...

    Text Solution

    |

  3. Answer the following questions : Does the apparent depth of a tank o...

    Text Solution

    |

  4. Answer the following questions : Does the apparent depth of a tank o...

    Text Solution

    |

  5. The image of a small electric bulb fixed on the wall of a room is to b...

    Text Solution

    |

  6. A screen is placed 90 cm from an object. The image an object on the sc...

    Text Solution

    |

  7. a) Determine the effective focal length of the combination of the two ...

    Text Solution

    |

  8. At what angle should a ray of light be incident on the face of a prism...

    Text Solution

    |

  9. A cardsheet divided into squares each of size 1 mm^(2) is being viewed...

    Text Solution

    |

  10. (i) At what distance should the lens be held from the card sheet in or...

    Text Solution

    |

  11. What should be the distance between the object and magnifying glass i...

    Text Solution

    |

  12. a) The anlge subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  13. a) The anlge subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  14. a) The anlge subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  15. a) The anlge subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  16. a) The anlge subtended at the eye by an object is equal to the angle s...

    Text Solution

    |

  17. An angular magnification (magnifying power) of 30 X is desired using a...

    Text Solution

    |

  18. A small telescope has an objective lens of focal length 140 cm and an ...

    Text Solution

    |

  19. (a) For the telescope described what is the separation between the obj...

    Text Solution

    |

  20. A Cassegrainian telescope uses two mirrors as shown in Fig. Such a tel...

    Text Solution

    |