Physics
General
Easy

Question

A plane mirror is placed at the bottom of a tank containing a liquid of refractive index n.P.  is a small object at a height h above the mirror. An observer 0, vertically above  P, outside the liquid sees P and its image in the mirror. The apparent distance between these two wall be.

  1. fraction numerator 2 h over denominator n end fraction
  2. 2 h(n-1)
  3. h[1+(1 over n)]
  4. fraction numerator 2 n over denominator h end fraction

The correct answer is: fraction numerator 2 h over denominator n end fraction

Book A Free Demo

+91

Grade*

Related Questions to study

General
maths-

The length of the normal to the curve y equals a c o s space h open parentheses x over a close parentheses at any point varies as

The length of the normal to the curve y equals a c o s space h open parentheses x over a close parentheses at any point varies as

maths-General
General
physics

A ray of light is incident on one  equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true?

A ray of light is incident on one  equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true?

physicsGeneral
General
physics

A ray of light is incident normally on one of the faces of a proms of apex 30 to the power of 0  and  n=square root of 2 what is the angle of deeviation which of the following is true?

A ray of light is incident normally on one of the faces of a proms of apex 30 to the power of 0  and  n=square root of 2 what is the angle of deeviation which of the following is true?

physicsGeneral
General
physics

There is a prism with refractive index equal to square root of 2 and the refracting angle equal to 30 to the power of 0. One of the refracting surfaces of the prism is polished. A beam of monochromatic light will retrace its path if its angle of incidence over the refracting surface of the prism is.........

There is a prism with refractive index equal to square root of 2 and the refracting angle equal to 30 to the power of 0. One of the refracting surfaces of the prism is polished. A beam of monochromatic light will retrace its path if its angle of incidence over the refracting surface of the prism is.........

physicsGeneral
General
physics

The minimum angle of deviation of a prism of refractive index 1.732  is equal to its refracting angle. What is the angle of prism?

The minimum angle of deviation of a prism of refractive index 1.732  is equal to its refracting angle. What is the angle of prism?

physicsGeneral
General
physics

An equilateral prism deviates a ray through 45 to the power of 0 for two angles of incidence differing by 20 to the power of 0 . What is the nof the prism?

An equilateral prism deviates a ray through 45 to the power of 0 for two angles of incidence differing by 20 to the power of 0 . What is the nof the prism?

physicsGeneral
General
physics

The minimum deviation produced by a glass prism of angle 60 to the power of 0  is  30 to the power of 0. If the velocity of light in vaccum is 3 cross times 10 to the power of 8 space end exponent m divided by s. Then what is the velocity of light in glass in m/s ?

The minimum deviation produced by a glass prism of angle 60 to the power of 0  is  30 to the power of 0. If the velocity of light in vaccum is 3 cross times 10 to the power of 8 space end exponent m divided by s. Then what is the velocity of light in glass in m/s ?

physicsGeneral
General
physics-

Two identical parallel plate capacitors are placed in series and connected to a constant voltage source of V volt. If one of the capacitor is completely immersed in a liquid of dielectric constant K, then the potential difference between the plates of the other capacitor will change to

In series combination, charge is constant.
therefore blank V proportional to fraction numerator 1 over denominator C end fraction
Now, fraction numerator V subscript 2 end subscript over denominator V subscript 1 end subscript end fraction equals fraction numerator K C over denominator C end fraction equals fraction numerator K over denominator 1 end fraction
But V subscript 1 end subscript plus V subscript 2 end subscript blank equals V
or fraction numerator V subscript 2 end subscript over denominator K end fraction plus V subscript 2 end subscript blank equals V blank o r blank V subscript 2 end subscript equals fraction numerator K over denominator K plus 1 end fraction V

Two identical parallel plate capacitors are placed in series and connected to a constant voltage source of V volt. If one of the capacitor is completely immersed in a liquid of dielectric constant K, then the potential difference between the plates of the other capacitor will change to

physics-General
In series combination, charge is constant.
therefore blank V proportional to fraction numerator 1 over denominator C end fraction
Now, fraction numerator V subscript 2 end subscript over denominator V subscript 1 end subscript end fraction equals fraction numerator K C over denominator C end fraction equals fraction numerator K over denominator 1 end fraction
But V subscript 1 end subscript plus V subscript 2 end subscript blank equals V
or fraction numerator V subscript 2 end subscript over denominator K end fraction plus V subscript 2 end subscript blank equals V blank o r blank V subscript 2 end subscript equals fraction numerator K over denominator K plus 1 end fraction V
General
physics

Angle of prism is A and its one surface is silvered. Light rays falling at an angle at incidence 2 A on first surface return back through the same path after suffering reflection at second silvered surface What is the refractive index of material?

Angle of prism is A and its one surface is silvered. Light rays falling at an angle at incidence 2 A on first surface return back through the same path after suffering reflection at second silvered surface What is the refractive index of material?

physicsGeneral
General
physics

A light ray is incident perpendicular to one face of  90 to the power of 0 prism and is totally internally reflected at the glass-air interface. If the angle of reflection is  45 to the power of 0. We conclude that the refractive index....
.

A light ray is incident perpendicular to one face of  90 to the power of 0 prism and is totally internally reflected at the glass-air interface. If the angle of reflection is  45 to the power of 0. We conclude that the refractive index....
.

physicsGeneral
General
biology

The below diagram is a duct system of liver, gall bladder and pancreas. Write the names of ducts from A to D

The below diagram is a duct system of liver, gall bladder and pancreas. Write the names of ducts from A to D

biologyGeneral
General
physics

A ray falls on a prism  ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

A ray falls on a prism  ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

physicsGeneral
General
physics

Two  parallel light rays are incident at one surface of a prism of refractive index  as shown in figure. What is the angle between the rays as they emerge ?

Two  parallel light rays are incident at one surface of a prism of refractive index  as shown in figure. What is the angle between the rays as they emerge ?

physicsGeneral
General
physics

An object is placed at a distance of f over 2 the from a convex lens the image will be ...

An object is placed at a distance of f over 2 the from a convex lens the image will be ...

physicsGeneral
General
physics

A concave mirror of focal length produces an images n  times the size of the object. If the image is real then What is the distance of the object from the mirror?

A concave mirror of focal length produces an images n  times the size of the object. If the image is real then What is the distance of the object from the mirror?

physicsGeneral