A sphere of glass `(mu = 1.5)` is of `20 cm` diameter. A parallel beam enters it from one side. Where will it get focussed on the other side ?

A glass sphere of refractive index 1.5 has a diameter of 0.2m. A parallel beam is incident on the sphere. Where is it brought to focus by the sphere ?

An empty spherical flask of diameter 15 cm is placed in water of mu = 4//3 . A parallel beam of light strikes the flask. Where does it get focussed, when observed from within the flask ?

A sunshine recorder globe of 30 cm diameter is made of glass of mu = 1.5 . A ray enters the globe parallel to its axis. Find the position from the centre of the sphere, where the ray crosses the axis.

An equiconvex lens of glass (mu_(g) = 1.5) of focal length 10 cm is silvered on one side. It will behave like a

An equiconvex lens of glass (mu_(g) = 1.5) of focal length 10 cm is silvered on one side. It will behave like a

An equiconvec lens of glass (mu_(g)-1.5) of focal length 10cm is silvered on one side. It will behave like a

If a mark of size 0.2 cm on the surface of a glass sphere of diameter 10 cm and mu = 1.5 is viewed through the diametrically opposite point, where will the image be seen and of what size? (in mm)