Deviation of a Light Ray by Refraction

A parallel sided block of glass of refractive index $1.5$ which is $3.6 \mathrm{mm}$ thick rests on the floor of a tank which is filled with water (refractive index$=\frac{4}{3}$). The difference between the apparent depth of floor at $A$ and $B$ when seen from vertically above is equal to

What should be the angle of incidence at A of the spherical glass placed in air so that so that grazing emergence of light ray takes place at $B?$

If light is refracted from a plane surface while passing from a denser medium to rarer medium, then which of the following statements is/are correct about it. [$\mathrm{C}$ is critical angle]

A transparent cube contains a small air bubble. Its apparent distance is $3 \mathrm{cm}$, when seen through one face and $9 \mathrm{cm}$, when seen through other face. If the refractive index of the material of the cube is $1.5$, real length of the edge of the cube must be___$\mathrm{cm}$.

An object $\mathrm{O}$ is placed at a height $h = 12 \mathrm{cm}$ above water $\left(\mathrm{\mu }=\frac{4}{3}\right)$ surface in a beaker. The lower surface of the beaker is polished, as shown in the figure. The location of final image will be

A ray of light is incident at the glass-water interface at an angle $\mathrm{i}$ it emerges finally parallel to the surface of water, then the value of ${\mathrm{\mu }}_{\mathrm{g}}$ would be

A diverging beam of light from a point source S having divergence angle $\mathrm{\alpha }$ , falls symmetrically on a glass slab as shown. the angles of incidence of the two extreme rays are equal. If the thickness of the glass slab is t and the refractive index n, then the divergence angle of the emergent beam is

A ray of light enters a glass sphere of refractive index $\mathrm{\mu }$ as shown in the figure. The angle of deviation $\mathrm{\delta }$ is equal to

A ray of light is passing from air into glass. If the angle of incidence, with respect to the normal to the interface, is increased

A ray of light travelling from glass to air (refractive index of glass=1.5). The angle of incidence is $50°.$The deviation of the ray is

A ray of light strikes a material's slab at an angle of incidence $60°.$If the reflected and refracted rays are perpendicular to each other, the refractive index of the materials is

A large glass slab $\left(\mathrm{\mu }=\frac{5}{3}\right)$ of thickness $8 \mathrm{cm}$ is placed over a point source of light on a plane surface. It is seen that light emerges out of the top surface of the slab from a circular area of radius $R$ cm. What is the value of $R?$

Figure, shows wave fronts in still water, moving in the direction of the arrow towards the interface PQ between a shallow region and a deep (denser) region. Which of the lines shown may represent

the wave fronts in the deep region?

A light ray is incident on the lower medium boundary at an angle $30°$ with the normal. Which of the following statements is true?

The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by

When a light ray goes from denser medium to rarer medium, the variation of deviation of ray with incidence angle is given by