Light Reflectio...

From the base of a hollow cone of height $$ h $$ with a small angle at the top, a small ring was cut off and placed in front of a parallel beam of light (the figure is exaggerated for clarity). At what distance x will rays of light reflected from it intersect the axis of the cone.

Select the correct alternative (s) :

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

A ray of light moving from an optically rarer to a denser medium 

When a ray of light from air enters a denser medium, it:

The refractive indices of glass and water w.r.t air are $$\dfrac{3}{2}$$ and $$\dfrac{4}{3}$$ respectively. The refractive index of glass w.r.t water will be

If aperture of lens is halved then image will be

Absolute refractive indices of glass and water are $$\dfrac {3}{2}$$ and $$\dfrac {4}{3}$$. The ratio of velocity of light in glass and water will be

The refractive index of water with respect to air is $$4/3$$ and the refractive index of glass with respect to air $$3/2$$. The refractive index of water with respect to glass is

Which of the following is a correct relation?