Spherical Mirrors

What is the focal length of a spherical mirror?

• The distance of its focus from the pole

• The distance between the principal axis and the focus

• The distance between the principal axis and the centre of curvature

• The distance between the pole and the centre of curvature

What is the relationship between focal length and radius of curvature?

• Focal length = Radius of curvature

• Focal length = 2 x Radius of curvature

• Focal length = 3 x Radius of curvature

• Focal length = 4 x Radius of curvature

What type of image is formed by a mirror if the rays actually meet at a point?

• Real and inverted

• Real and erect

• Virtual and inverted

• Virtual and erect

Can a virtual image be obtained on a screen?

• Yes

• No

• It depends on the mirror

• It depends on the object

What happens to a ray passing through the centre of curvature of a spherical mirror?

• It gets absorbed by the mirror

• It gets refracted

• It gets reflected back along its own path

• It changes direction randomly

What happens to an incident ray parallel to the principal axis after reflection from a concave mirror?

• It passes through the focus

• It passes through the centre of curvature

• It gets absorbed by the mirror

• It changes direction randomly

What happens to an incident ray parallel to the principal axis after reflection from a convex mirror?

• It passes through the focus

• It passes through the centre of curvature

• It gets absorbed by the mirror

• It changes direction randomly

What is the nature of the image formed by a concave mirror for an object situated beyond the focus?

• Real and inverted

• Real and erect

• Virtual and inverted

• Virtual and erect

What is the nature of the image formed by a concave mirror for an object situated between the focus and the pole?

• Real and inverted

• Real and erect

• Virtual and inverted

• Virtual and erect

What is the nature of the image formed by a convex mirror for each position of the object?

• Real and inverted

• Real and erect

• Virtual and inverted

• Virtual and erect