Multiple choice

Consider the following statements:

  1. A red object when seen through a thick blue glass appears green.
  2. The ratio of the speed of light in a vacuum to the speed of light in a material is known as reflective index.

Which of the given statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement 1 is wrong. A red object appears black when viewed through blue glass because red object reflects only red colour and absorbs all the other colours, so it looks black. Statement 2 is also incorrect. The ratio of the speed of light in a vacuum to the speed of light in a material is known as refractive index.

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