Reflection, refraction and lenses

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Question 43
Easy

An advertising board has three colored panels.

The board is placed in a dark room.

Figure 1 shows the board when a spotlight shines white light onto it.

Figure 1 shows a vertical rectangular board containing three horizontal stripes under white light. From top to bottom, the stripes are labeled 'blue', 'red', and 'green'.

Figure 2 shows the same board when the spotlight is covered with a colored filter.

Figure 2 shows the same vertical board under a colored filter. The top stripe is black, the middle stripe is red, and the bottom stripe is black.

State the color of the filter that covers the spotlight.

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Reflection, refraction and lenses Questions

  1. GCSE
  2. /Physics
  3. /Reflection, refraction and lenses