NEET  >  Sign Convention of Spherical Mirrors

# Sign Convention of Spherical Mirrors Video Lecture - Physics Class 12 - NEET

## Physics Class 12

154 videos|444 docs|185 tests

## FAQs on Sign Convention of Spherical Mirrors Video Lecture - Physics Class 12 - NEET

 1. What is the sign convention of spherical mirrors?
Ans. The sign convention of spherical mirrors is a set of rules used to determine the signs of distances and radii of curvature while solving problems related to spherical mirrors. According to this convention, distances measured in the same direction as the incident light are considered positive, while those measured in the opposite direction are negative. Similarly, the radius of curvature of a concave mirror is considered positive and negative for a convex mirror.
 2. How does the sign convention help in solving problems related to spherical mirrors?
Ans. The sign convention helps in solving problems related to spherical mirrors by providing a standardized approach to determine the signs of distances and radii of curvature. By following this convention, we can easily determine whether to consider a value as positive or negative, making it easier to apply the mirror formula and magnification formula for calculations.
 3. What does a positive value for the radius of curvature indicate in the sign convention of spherical mirrors?
Ans. In the sign convention of spherical mirrors, a positive value for the radius of curvature indicates that the mirror is a concave mirror. A concave mirror is characterized by its inward curvature, with the reflecting surface facing inwards. This positive value signifies that the center of curvature lies on the same side as the incident light.
 4. How do we determine the sign of the object distance using the sign convention of spherical mirrors?
Ans. In the sign convention of spherical mirrors, the sign of the object distance is determined based on the position of the object relative to the mirror. If the object is located on the same side as the incident light, the object distance is considered positive. On the other hand, if the object is located on the opposite side of the incident light, the object distance is considered negative.
 5. Can the sign convention of spherical mirrors be applied to lenses as well?
Ans. Yes, the sign convention of spherical mirrors can also be applied to lenses. While solving problems related to lenses, the same rules regarding the signs of distances and radii of curvature can be followed. However, it is important to note that the sign convention may vary slightly for thin lenses compared to spherical mirrors, as the lens formula is used instead of the mirror formula.

## Physics Class 12

154 videos|444 docs|185 tests

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