Respuesta :

Answer:

Apparent depth (Da) = 60.15 cm (Approx)

Explanation:

Given:

Distance from fish (D) = 80 cm

Find:

Apparent depth (Da)

Computation:

We know that,

Refractive index of water (n2) = 1.33

So,

Apparent depth (Da) = D(n1/n2)

Apparent depth (Da) = 80 (1/1.33)

Apparent depth (Da) = 60.15 cm (Approx)

The apparent depth of the fish is 60 cm.

To calculate the apparent depth of the fish, we use the formula below.

Formula:

  • R.F(water) = Real depth(D)/Apparent depth(D')
  • R.F = D/D'.................... Equation 1

Where:

  • R.F = Refractive index of water

Make D' The subject of the equation.

  • D' = D/R.F................... Equation 2

From the question,

Given:

  • D = 80 cm
  • R.F = 1.333

Substitute these values into equation 2

  • D' = 80/1.33
  • D' = 60.01
  • D' = 60 cm

Hence, the apparent depth of the fish is 60 cm

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