Light Reflectio...

Which of the following is correct regarding reflection.

In optical instruments, the lenses are used to form the image by the phenomenon of ...................................

Convex lens

A convex mirror of radius of curvature $$1.6 m$$ has an object placed at a distance of $$1m$$ from it. The image is formed at a distance of :

The apparent flattening of the sun at sunset and sunrise is due to 

If the angle of incidence is i and that of refraction is r. Then the speed of light in the medium to which the light is reflected from air is?

Lens spectacles are made from

If the angle of incidence is twice the angle of refraction in a medium of refractive index $$\mu$$, then the angle of incidence is :

A ray of light is travelling through a medium of refractive index $$\dfrac {1}{\sqrt {2}}$$ with respect to air. When it is incident on the surface making an angle $$45^{\circ}$$ with the surface, which of the following will take place?

How will you design a shaving mirror assuming that a person keeps it $$10cm$$ from his face and view the magnified image of the face at the closest comfortable distance of $$25cm$$. The radius of curvature of the mirror would then be: