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Class 10 Physics (India)

Course: Class 10 Physics (India) > Unit 1

Lesson 7: Mirror formula & magnification
Science
Class 10 Physics (India)
Light – reflection & refraction
Mirror formula & magnification
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Using the magnification formula for mirrors

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Problem

As shown in the diagram below, an object start text, O, end text of height 3, point, 0, space, start text, c, m, end text is kept in front of a concave mirror, which forms the image start text, I, end text.
Find the height of the image h, start subscript, start text, I, end text, end subscript.
Note: Let's write the answer in the Cartesian sign convention.
h, start subscript, start text, I, end text, end subscript, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
start text, c, m, end text
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