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Railways PYQCBT 2 2017

RRB NTPC · Question 104

The ratio of the height of image to the height of object is known as:

  1. Lateral inversion

  2. Mirror formula

  3. First law of reflection

  4. Linear magnification

Show answer & explanation

Answer: (D) Linear magnification

Explanation

Linear magnification m = height of image / height of object. Its sign shows whether the image is erect or inverted.