Physics-
General
Easy
Question
In the diagram shown, a ray of light is incident on the interface between 1 and 2 at angle slightly greater than critical angle. The light suffers total internal reflection at this interface. After that the light ray falls at the interface of 1 and 3, and again it suffers total internal reflection. Which of the following relations should hold true?
The correct answer is:
Related Questions to study
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A curved surface of radius 
separates two medium of refractive indices 
and 
as shown in figures A and B
Identify the correct statement (s) related to the formation of images of a real object placed at x from the pole of the concave surface, as shown in figure B
A curved surface of radius separates two medium of refractive indices and as shown in figures A and B
Identify the correct statement (s) related to the formation of images of a real object placed at x from the pole of the concave surface, as shown in figure B
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Three right angled prisms of refractive indices 
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Three right angled prisms of refractive indices and are fixed together using an optical glue as shown in figure. If a ray passes through the prisms without suffering any deviation, then
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In n similar thin prisms of same material and refractive index are arranged in series as shown :
In n similar thin prisms of same material and refractive index are arranged in series as shown :
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Figure shows the graph of angle of deviation 
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Figure shows the graph of angle of deviation versus angle of incidence i for a light ray striking a prism. The prism angle is :
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A vertical light ray strikes a plane mirror kept inclined at an angle of 45° to the horizontal. The reflected ray is horizontal as shown in fig. A glass prism with refracting angle 6° is placed in the path of the reflected ray. In what way and by how much should the mirror be rotated, if the total deviation of the light ray is to be 90° ?
A vertical light ray strikes a plane mirror kept inclined at an angle of 45° to the horizontal. The reflected ray is horizontal as shown in fig. A glass prism with refracting angle 6° is placed in the path of the reflected ray. In what way and by how much should the mirror be rotated, if the total deviation of the light ray is to be 90° ?
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A fixed cylindrical tank of height H=4 m and area 
, is filled up with a liquid. An observer through a telescope fitted at the top of the wall of the tank and inclined at 
with the vertical. When the tank is completely filled with liquid, he notices an insect, which is at the centre of the bottom of the tank. At t=0, he opens a cork of area a at the bottom of the tank. The insect moves in such a way that it is visible for a certain time. Find the refractive indexof the liquid
A fixed cylindrical tank of height H=4 m and area , is filled up with a liquid. An observer through a telescope fitted at the top of the wall of the tank and inclined at with the vertical. When the tank is completely filled with liquid, he notices an insect, which is at the centre of the bottom of the tank. At t=0, he opens a cork of area a at the bottom of the tank. The insect moves in such a way that it is visible for a certain time. Find the refractive indexof the liquid
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A medium (M) having refractive index 2 is placed in air. Its pole is at origin. A point object at (-10 cm,0) starts moving towards the surface with velocity 
at 45° with principal axis. [R=20 cm]
Velocity of image along ' 
' direction is ___________ ms–1
A medium (M) having refractive index 2 is placed in air. Its pole is at origin. A point object at (-10 cm,0) starts moving towards the surface with velocity at 45° with principal axis. [R=20 cm]
Velocity of image along ' ' direction is ___________ ms–1
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The time required for the light to go from A to B, when a ray of light goes from point A in a medium where the speed of light is 
to a point 
in a medium where the speed of light is 
as shown in figure, is:
The time required for the light to go from A to B, when a ray of light goes from point A in a medium where the speed of light is to a point in a medium where the speed of light is as shown in figure, is:
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It is found that electromagnetic signals sent inside glass sphere from A towards B reach point C. The speed of electromagnetic signals in glass cannot be:
It is found that electromagnetic signals sent inside glass sphere from A towards B reach point C. The speed of electromagnetic signals in glass cannot be:
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In the figure ABC is the cross section of a right angled prism and BCDE is the cross section of a glass slab. The value of 
so that light incident normally on the face AB does not cross the face BC is (given 
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An object is placed in front of a convex mirror at a distance of 50 cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no parallax between the images formed by the two mirrors. What is the radius of curvature of the convex mirror?
An object is placed in front of a convex mirror at a distance of 50 cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no parallax between the images formed by the two mirrors. What is the radius of curvature of the convex mirror?
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A long rectangular slab of transparent medium of thickness 'd' placed such a table with its length parallel to the x-axis and width parallel to the y-axis. A ray of light travelling in air makes a near normal
incidence on the slab as shown. Taking the point of incidence as origin (0,0,0). The refraction index 
of the medium varies as 
, where 
and r(>d) are constants. The refractive index of air is 1
The -coordinate of the point A where the ray intersects the upper surface of the slab air boundary is
A long rectangular slab of transparent medium of thickness 'd' placed such a table with its length parallel to the x-axis and width parallel to the y-axis. A ray of light travelling in air makes a near normal
incidence on the slab as shown. Taking the point of incidence as origin (0,0,0). The refraction index of the medium varies as , where and r(>d) are constants. The refractive index of air is 1
The -coordinate of the point A where the ray intersects the upper surface of the slab air boundary is
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A point source S is placed midway between two converging mirrors having equal focal length as shown in figure. Find the values of d for which only one image is formed.
A point source S is placed midway between two converging mirrors having equal focal length as shown in figure. Find the values of d for which only one image is formed.
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A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image.
A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image.
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A convex mirror of focal length 10an is shown in the figure. A linear object AB=5 cm is placed along the optic axis. Point is at a distance of 25 cm from the pole of mirror. The length of image of AB is
A convex mirror of focal length 10an is shown in the figure. A linear object AB=5 cm is placed along the optic axis. Point is at a distance of 25 cm from the pole of mirror. The length of image of AB is
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