Answer:
46.a
47.a
Explanation:
46. Uses of Plane Mirror :
They are used as looking glass.
They are used in solar cookers.
They are also used in constructing periscope which is used in submarines.
They are also used to make kaleidoscope, a toy which produces beautiful patterns.
They are also used in various scientific instruments
47.Clearly, moving the object closer to the lens makes the image become both larger and further away. As you move the object closer and closer to the focal point, the image will become further and further away. ... As expected the image moves further away and becomes much bigger than the object
