What is centre of curvature?

Academic Physics NCERT Class 7

The Center of the sphere of the mirrro$(convex\ or\ concave)$ is a part, which is called the center of curvature. And it is denoted by "C".

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Updated on: 10-Oct-2022

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In order to obtain a magnification of −2 (minus 2) with a concave mirror, the object should be placed:(a) between pole and focus (b) between focus and centre of curvature(c) at the centre of curvature (d) beyond the centre of curvature
The image formed by a concave mirror is real, inverted and of the same size as the object. The position of the object must then be:(a) at the focus (b) between the centre of curvature and focus(c) at the centre of curvature (d) beyond the centre of curvature
A concave mirror produces magnification of +4. The object is placed:(a) at the focus (b) between focus and centre of curvature(c) between focus and pole (d) beyond the centre of curvature
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?$(a)$. Between the principal focus and the centre of curvature$(b)$. At the centre of curvature$(c)$. beyond the centre of curvature$(d)$. Between the pole of the mirror and its principal focus.
In the concave reflector of a torch, the bulb is placed:(a) between the pole and focus of reflector (b) at the focus of reflector(c) between focus and centre of curvature of reflector (d) at the centre of curvature of reflector
The real image formed by a concave mirror is smaller than the object if the object is:(a) between centre of curvature and focus (b) at a distance greater than radius of curvature (c) at a distance equal to radius of curvature (d) at a distance equal to focal length
The real image formed by a concave mirror is larger than the object when the object is:(a) at a distance equal to radius of curvature(b) at a distance less than the focal length (c) between focus and centre of curvature(d) at a distance greater than radius of curvature
Q) What is that present in the centre of atom?
Explain why a ray of light passing through the centre of curvature of a concave mirror gets reflected along the same path.
What is the relation between focal length and radius of curvature of a spherical mirror?
If the focal length of a convex mirror is 25 cm, what is its radius of curvature?
The angle of incidence for a ray of light passing through the centre of curvature of a concave mirror is:(a) 45° (b) 90° (c) 0° (d) 180°
Explain why, a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path.
In order to obtain a magnification of, −0.6 (minus 0.6) with a concave mirror, the object must be placed:at the focusbetween pole and focusbetween focus and centre of curvaturebeyond the centre of curvature
Define the following terms with respect to spherical mirrors: (i) Pole (ii) Centre of curvature (iii) Principal axis (iv) Principal focus

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