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Reflection of Light — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceReflection of Light2 Marks
Question
Write down a formula for the magnification produced by a concave mirror.
  1. In terms of height of object and height of image.
  2. In terms of object distance and image distance.
✓

Answer

The formula for the magnification (m) produced by a concave mirror,
  1. In terms of the height of an object (h) and the height of an image (h') is as follows:
$\text{Magnification (m)} = \frac{\text{height of image}}{\text{height of object}} = \frac{\text{h}'}{\text{h}}$
  1. In terms of the object distance (u) and the image distance (v) is as follows:
$\text{Magnification (m)} = −\frac{\text{image distance}} {\text{object distance}} =\frac{\text{v}}{\text{u}}​​​​​​​$

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