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What is the area of the surface of water through which light from the bulb, placed at the bottom of a tank containing water to a depth of 80cm, can emerge out? (Assuming the refractive index of water is 1.33 and considering the bulb to be a point source.)

Options

  1. A1.8 m²
  2. B2.6 m²
  3. C3.2 m²
  4. D4.1 m²

Correct answer

B. 2.6 m²

Step-by-step solution

Correct Option is : (B) 2.6 m²

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