A 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:
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:
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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