This video explains reflection property of light - it starts with mirror image, explains the direction of light, then introduces the reflection concept, smooth/rough surface and its impact on reflection and what is a mirror.
This video explains When a ray of light, while travelling from one optical medium to another optical medium(say, from air to glass) strikes the surface of separation of two media, is returned by the second optical medium into the first optical medium with a change of angle, the phenomenon is called the reflection of light.
This video explains that light travels along the straight line. This explains with an activity carried out. This also explains the concept of propogation of light through a medium.
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