Light Reflectio...

The refractive index of material of a prism of angles $$45^{\circ}, -45^{\circ}$$, and $$-90^{\circ}$$ is $$1.5$$. The path of the ray of light incident normally on the hypotenuse side is shown in

Sunlight that bounces off a surface is said to be __________ from the surface.

Refractive index of a rectangular glass slab is  $$\mu = \sqrt { 3 }.$$  A light ray incident at an angle  $$60 ^ { \circ }$$  is displaced laterally through  $$2.5  { cm } .$$  Distance travelled by light in the slab is

A thin glass (refractive index 1.5) lens has optical power of -5D in air.Its optical power in a liquid medium with refractive index 1.6 will be: 

Light propagates $$2\ cm$$ distance in glass of refractive index $$1.5$$ in time $$t_0$$. In the same time $$t_0$$, light propagates a distance of $$2.25\ cm$$ in a medium. The refractive index of the medium is :

A convex mirror of focal length $$10cm$$ is shown in figure. A linear object $$AB=5cm$$ is placed along the optical axis. Point $$A$$ is at distance $$25cm$$ from the pole of mirror. The size of image of $$AB$$ is:

When an object is placed at a distance of $$25 \ cm$$ from a mirror, the magnification is $$m_1$$. But the magnification becomes $$m_2$$, when the object is moved $$15 \ cm$$ farther away with respect to the earlier position. If $$\dfrac{m_1}{m_2}=4$$, then find the focal length of the mirror and what type of mirror it is? 

The second lens in this optical instrument can not : 

An object of size $$7.5\ cm$$ is placed in front of a convex mirror of radius of curvature $$25\ cm$$ at a distance of $$40\ cm.$$ The size of the image should be

The radius of curvature of a concave mirror is $$40\ cm$$ and the size of the real image is twice as that of an object, then the object distance is: