Question

3.What is the bending of a ray of light when it travels through a medium called?
a.reflection
b.rectilinear propagation of light
c.refraction
d.diffraction

4.Concave mirror is a curved\nmirror which is silvered_______________
a.in its outer side
b.in and out side
c.None of the above
d.from inside

Answer 1

3.The bending of light as it passes from one medium to another is called refraction.

Answer: c.refraction 

4.Concave mirror is a curved mirror which is silvered from inside.

Answer: d.from inside