Home
Class 12
PHYSICS
A bulb is kept at a depth h inside water...

A bulb is kept at a depth `h` inside water of refractive index `x`. Area of bright patch on water surface is

A

`(pih^2)/(n^2-1)`

B

`(pih^2)/(sqrt(n^2-1))`

C

`pi(n^2-1)h^2`

D

`(pih^2)/n^2`.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Draw a ray diagram showing the formation of the image by a point object on the principal axis of a spherical convex surface separating two media of refractive indices n_(1) and n_(2) , when a point source is kept in rarer medium of refractive index n_(1) . Derive the relation between object and image distance in terms of refractive index of the medium and radium of curvature of the surface. Hence obtain the expression for lens-maker's formula in the case of thin convex lens.

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40^(@) . What is the refractive index of the material of the prism? The refracting angle of the prism is 60^(@) . If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light

A convex lens made of glass has focal length 0.15 m in air. If refractive index of glass is 3//2 and that of water is 4//3 , the focal length of lens when immersed in water is

A point source of light is kept below the surface of water (n_(w) = (4)/(3)) at a depth of sqrt7 m . The radius of the circular bright patch of light noticed on the surface of water is …… m .

A tank is filled with water upto a height H=1.00m. Water is allowed to come out of a hole in one of the walls at a depth h =0.20m below the surface of water. Calculate the range of the jet of water from the orifice.

A convex lens made of glass has focal length 0.15 m in air. If the refractive index of glass is 3/2 and that of water is 4/3, the focal length of lens when immersed in water is

Convex lens of focal length 15 cm is made of material having refractive index 1.2. When placed in water (n = 1.3) , it will behave as :