The image of an object placed in front of a concave mirror of focal length 15 cm is of the same size as of the object. The distace between the object and its image will be
a) 15
b) 30
c) 60
d) 0
Answers
Answer:
30 cm
Explanation:
The real and inverted image created by a concave mirror becomes of equal size to the object when both object and images are situated on the center of curvature.
This means that the object distance is equal to the radius of curvature for the mirror.
Radius of curvature =2× focal length of the mirror.
Given, focal length of the mirror =15cm
So, object distance = radius of curvature =2×15cm=30cm
Don't Forget to add the unit at the end, as there will be options with multiple units.
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Answer:
The distace between the object and its image will be 30cm.
Explanation:
The real and inverted image created by a concave mirror becomes of equal size to the object when both object and images are situated in the center of curvature.
This means that the object distance is equal to the radius of curvature for the mirror.
The radius of curvature =2× focal length of the mirror.
Given, the focal length of the mirror = is 15cm
So, object distance = radius of curvature =2×15cm=30cm
A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (recessed inward). Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration. Distorting mirrors are used for entertainment. They have convex and concave regions that produce deliberately distorted images. They also provide highly magnified or highly diminished (smaller) images when the object is placed at certain distances.
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