CONCAVE MIRROR F/15CM
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7,000Ugx
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concave mirror is a type of spherical mirror with an inner-curved reflecting surface. When light rays strike a concave mirror, they converge towards a point called the principal focus (denoted as F). Here are some key terms related to concave mirrors:

  1. Focal Length (f): The distance from the mirror’s surface to the principal focus.
  2. Object Distance (u): The distance from the object to the mirror.
  3. Image Distance (v): The distance from the image to the mirror.
  4. Magnification (m): The ratio of image height to object height.

Now, let’s apply this to your case. You mentioned a concave mirror with a focal length of 15 cm. Let’s find the position of the object:

  1. Given: f = -15 cm (negative because it’s a concave mirror)
  2. We know that the magnification is 2 (since the image is virtual).

Using the mirror formula: [ \frac{1}{f} = \frac{1}{v} + \frac{1}{u} ]

Substitute the values: [ \frac{1}{-15} = \frac{1}{v} + \frac{1}{u} ]

Solving for u, we get: [ u = -7.5 , \text{cm} ]

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