A beam of light is converging towards a point I on a screen. A plane parallel plate of glass whose thickness is in the direction of beam =t, refractive index=n is introduced in the path of the beam. The convergence point is shifted by .........

Following illustration depicts the mechanism of breathing. In which of the following option all the parts A, B, C and D are correctly labelled?

The given figure illustrates the changes in lung volume during the process of breathing.

The change from II to III indicates the

Light travels through a glass plate of thickness t and having refractive index n. If C be the velocty of Light in vacuum. What is the time taken by the light of travel this thickness of glass?

Go through the following diagrammation view of human respiratory system. Identify A, B, C and D –

Monochromatic light of wave length traveling in a medium of reflective index  euters a denser medium of refractive index  . What is the wave length in the second medium?

Respiration involving following steps -
A. Diffusion of gases and across alveolar membrane
B. Transport of gases by blood
C. Utilization of by cell for catabolic reactions and resultant release of
D. Pulmonary ventilation by which atmospheric air is drawn in and rich alveolar air is released out
E. Diffusion of and CO? between blood and tissues.
The correct sequence of steps is -

A bird in air looks at a fish vertically below it and inside water, is  the height of the bird above the surface of water and , the depth of the fish below the surface of water. If refractive index of water with respect to air be n , then what is the distance of the fish observed by the bird

A tank contains two different liquids which do not mix with each other as shown in figure. The lower and upper liquids are at depths  and  respectively. An object o is located at the bottom. When seen vertically from above, locate the position of image of o.

At any point on a curve if the subtangent and subnormal are equal then at that point the length of the tangent is equal to

For such questions, we should know the formula of length of tangent, subnormal and subtangent.

The below diagram represents the human digestive system. Identify A, B, C, D and E

A vessels of depth t is half filled with oil of refractive index  and the other half is filled with water (refractive index  ). The apparent depth of the vessel when viewed from above is…….

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.

The length of the normal to the curve at any point varies as

For such questions, we should know the formula of length of normal.

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 normally on one of the faces of a proms of apex   and  n= what is the angle of deeviation which of the following is true?