Question

calculate the virtual depth of a black dot at the bottom of a cubic block made of transparent glass with each side 4 cm while the refractive index of glass is 1.6​

Answer 1

Answer:

2.5

Explanation:

Dapp= Dreal/n

=4/1.6

=40/16

=2.5

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Answer 2

The virtual depth of a black dot at the bottom of a cubic block is 2.5cm.

Explanation:

• Given that the real depth of the point with each side = r = 4cm = 0.04m, refractive index of glass is = n = 1.6
• We are finding the virtual depth,
• we know that n= r/r' ⇒ 1.6 = 4/r' ⇒ r' = 2.5cm
• Therefore, the virtual depth of a black dot at the bottom of a cubic block =2.5cm.