Home
Class 12
PHYSICS
For a fish under water, the entire outsi...

For a fish under water, the entire outside view is confined within a cone. Draw an appropriate ray diagram for this and calculate the value of semi-vertical angle of the cone. Refractive index of water `=4//3`

Text Solution

AI Generated Solution

To solve the problem of determining the semi-vertical angle of the cone for a fish underwater, we will follow these steps: ### Step 1: Understanding the Setup We have a fish underwater, and we want to visualize the cone of light that it can see. The fish is submerged in water, and the light rays from above the water surface enter the water at different angles. ### Step 2: Drawing the Ray Diagram 1. **Draw the Water Surface**: Start by drawing a horizontal line to represent the water surface. 2. **Draw the Fish**: Below this line, draw a fish symbol to represent the position of the fish. ...
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS (1)|13 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS (2)|9 Videos

  • NUCLEI

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST FOR BOARD EXAMINATION|15 Videos

  • SEMICONDUCTOR ELECTRONICS METERIALS DEVICES AND SIMPLE CIRCUITS

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST FOR BOARD EXAMINATION|12 Videos

Similar Questions

Explore conceptually related problems

Brewster angle for air to water transition is (refractive index of water is 4/3 )

Calculate the time taken by light to travel a distance of 10 km in water of refractive index 4//3 .

When the surface of a lake is calm , a fish submerged in water will see the entire outside world within an inverted cone whose vertex is situated at the eye of the fish . What is the vertex angle of the cone ? (""_(a) n_(w) = (4)/(3)) and sin 49^(@) = 0.75

A salt water lake has refractive index 1.4. A fish when looks towards the surface of water, can only view things outside through a circular area. Calculate the semi-vertical angle of the cone formed within which the circular area lies.

A diver at a depth of 12 m in water (mu=4 //3) sees the sky in a cone of semi-vertical angle

In a lake, a fish rising vertically to the surface of water uniformly at the rate of 3 m/s, observes a bird diving vertically towards the water at the rate of 9 m/s. The actual velocity of the dive of the bird is (given, refractive index of water = 4/3)

A wooden stick of length 100 cm is floating in water while remaining vertical. The relative density of the wood is 0.7. Calculate the apparent length of the stick when viewed from top (close to the vertical line along the stick) Refractive index of wate =(4)/(3) .

A pile 4m high driven into the bottom of a lake is 1m above the water . Determine the length of the shadow of the pile on the bottom of the lake if the sun rays make an angle of 45^@ with the water surface . The refractive index if water is 4/3 .

A small fish, 0.4m below the surface of a lake, is viewed through a simple converging lens of focal length 3m. The lens in kept at 0.2m above the water surface such that the fish lies on the optical axis of the lens. Find the image of the fish seen by the observer. The refractive index of water is 4//3 .