Practice Question

1.Explain what a coloured filter will do.

2. Suggest why it is essential that the filter is transparent and not opaque.

3. White light is directed at a blue filter, state the colour of the transmitted light

4a. Barry directed light through two filters. He sent a beam of white light through a red filter, the transmitted ray from the red filter was then shone through a blue filter. State what Barry would had observed.

4b. Explain the observations in 4a