Question

In which step is the flame of the candle seen clearly? Why?

Answer 1

• The flame of the candle is seen clearly in Step 1 because the tube is straight and light travels in a straight line. The light from the candle flame passes through the straight tube and reaches our eyes.
• In Step 2, the tube is bent, so the light cannot travel through the curved path to reach our eyes. Therefore, the flame is not seen clearly.