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Question 20253
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Ray Optics: Mirror — Sign Convention Summary MCQ

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Mirror — Sign Convention SummaryEasyQuestion 20253

Question

In the New Cartesian sign convention for mirrors, distances measured in the direction of incident light are taken as:
  1. A
    Negative
  2. B
    Positive
    Correct
  3. C
    Zero
  4. D
    Imaginary

Correct answer

Positive

Explanation

In the New Cartesian convention: incident light travels in the +x direction. Distances measured in the same direction (+x) are positive; opposite (−x) are negative. The pole P is the origin. For a real object on the left, u is negative.

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