A point source of light is kept at a dep...

A point source of light is kept at a depth of 'h' in water of r.i 4/3. The radius of the circle at the surface of water through which light emits is

`(3)/(sqrt(7))h`

`(sqrt(7))/(3)h`

`(sqrt(3))/(7)h`

`(7)/(sqrt(3))h`

Text Solution

Verified by Experts

Topper's Solved these Questions

QUESTION PAPER 2007
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|50 Videos
QUESTION PAPER 2009
WB JEE PREVIOUS YEAR PAPER|Exercise Multiple Choice Questions (Physics)|40 Videos

Similar Questions

Explore conceptually related problems

A source of light is placed at the bottom of a tank filled with water up to the height of 80 cm. Calculate the area at the surface of water through which light rays will be emitted. Refractive index of water = 1.33.

Define critical angle. A luminous object is placed at a depth h in a medium of refractive index mu . Show that the radius r of the circular base of the one through which light can emerge is r = h // sqrt(mu^(2) - 1)

The water in a pond has a refractive index (5)/(3) . A source of light is placed 4 m below the surface of water. Calculate the minimum radius of an opaque disc needed to be floated on water so that light does not come out.

A luminous point source is placed at a depth of 30 cm in a source containing a liquid of refractive index 1.25. From the source light rays are being emitted in all directions. The rays which are refracted from the upper surface of the liquid form a circle. Calculate the radius of the circle.

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2008-PHYSICS

The refractive indices of glass and quartz with respect to air are (3)...
Text Solution
|
The radius of curvature of a concave mirror is 24cm and the image is m...
Text Solution
|
A point source of light is kept at a depth of 'h' in water of r.i 4/3....
Text Solution
|
Four point charges each '+q' is placed on the circumference of a circl...
Text Solution
|
64 identical spheres of charge q and capacitance C each are combined t...
Text Solution
|
Lenz's law of electromagnetic induction corresponds to
Text Solution
|
A silicon and a germanium diode has identical physical dimensions. The...
Text Solution
|
A thin wire of resistance 4Omega is bent to form a circle. The resista...
Text Solution
|
A battery of emf E and internal resistance 'r' is connected to an exte...
Text Solution
|
The binary number 10111 is equivalent to the decimal number
Text Solution
|
The angle subtended by the vector A=4hati+3hatj+12hatk with the x-axis...
Text Solution
|
The velocity of a particle (v) at an instant 't' is given by v = at + ...
Text Solution
|
The distance travelled by an object along a straight line in time 't' ...
Text Solution
|
A pellet of mass 1 gm is moving with an angular velocity of 1 rad/s al...
Text Solution
|
Two point objects of mass 1.5 gm and 2.5 gm respectively are at a dist...
Text Solution
|
If the earth shrinks such that ils mass does not change but radius dec...
Text Solution
|
A Shell of mass 10 Kg is moving with a velocily of 10 Meter/Sec when i...
Text Solution
|
Force required to move a mass of 1 kg at rest on a horizonlal rough pl...
Text Solution
|
A rocket of mass 100 kg burns 0.1 Kg of fuel per second. If velocity o...
Text Solution
|
The weight of a body on the surface of the earth is 12.6 N. When it is...
Text Solution
|