GCSE level questions on light![]() Q4. Visible light is used for communications. Name two other parts of the electromagnetic spectrum are used for communications. Microwaves [2 marks] (b) The appearance of visible light can change when it interacts with different objects. Complete the sentences below selecting your answers from this box of words:
[3 marks] (c) The diagram shows a spotlight containing a convex lens. A cyan filter is placed in front of the spotlight. The spotlight is directed at a yellow object in a darkened room. Explain why the yellow object appears green. The cyan filter only allows green and blue light through - absorbing all others. The yellow object only reflects red and green light - absorbing all others. The yellow object can therefore only reflect green light, as thiss is the only light falling on it that it does not absorb. [3 marks]
(Total 8 marks) |
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