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An air bubble in water ( = 4 3 ) is shown in figure. The apparent depth of the image of the bubble in plane mirror viewed by observer is.

Options

  1. A24 cm
  2. B16 cm
  3. C18 cm
  4. D12 cm

Correct answer

A. 24 cm

Step-by-step solution

The bubble is 8 cm above the plane mirror. By mirror property, the image forms 8 cm below the mirror (behind it). Real depth of this image from the water surface = 24 + 8 = 32 cm Using the apparent depth formula: Apparent Depth = Real Depth = 32 4 3 = 32 3 4 = 24 cm

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