A glass sphere of radius `5 xx 10^-2 m` has a small bubble `2 xx 10^-2m` from its centre. The bubble is viewed along a diameter of the sphere, from the side on which it lies. How far from the sphere will it appear? Refractive index of glass 1.5.

Fig.2.49 shows a solid glass sphere of radius 5 cm that has a small air bubble O trapped at a distance 2 cm from the centre C.Th refractive index of the material of glass is 1.5.Find the apparent position of the bubble where it will appear ,when seen throught the surface from an ougtside point E. .

A small object is enclosed in a spere of glass 7 cm in radius .It si situated 1 cm from the centre and is veiwed from the side to whh it is nearest.where will it appear to be ,if refractive index is 1.4?Also find the appparent position of the oject as seen by an eye looking laong diameter throug greatest thickness of eh glass.

A small piece of paper stucjk on a glass shpere of 5 cm radius is viewed through the glass from the position directly opposite .Find the position of the image .Refractie index of glass is 1.5.

A glass slab of thickness 12 mm is placed on a table .The lower surface of the slab has a black spot.At what depth from the upper surface will th espot appear,when viewed fromo above?The refractive index of glass =1.5.

A conducting sphere of radius 10 cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is 1.5xx 10^3N//C and points radially inward, what is the net charge on the sphere?

A spherical conductor of radius 12 cm has a charge of 1.6 xx 10^-7C distributed uniformly on its surface. What is the electric field inside the sphere?

A beam of light strikes a glass sphere of 20 cm diameter converging towards a point 40 cm behind the pole of the spherical surface.Fnd the position of the image,if the refractive index of glass is 1.5.