Reflection at a Curved Surface

The circular boundary of the concave mirror subtends a cone of half angle at its centre of curvature. The minimum value of for which ray incident on this mirror parallel to the principle axis suffers reflection more than one is

A point source of light is 60 cm from a screen and is kept at the focus of a concave mirror which reflects light on the screen. The focal length of the mirror is 20 cm. The ratio of average intensities of the illumination on the screen when the mirror is present and when the mirror is removed is:

In the figure shown, the image of a real object is formed at point I. AB is the principal axis of the mirror. The mirror must be:

An object of length $4 \mathrm{cm}$ is kept on the principal axis of a convex mirror at a distance of $f$. The size of the image formed is-

What kind of mirrors are used as rear-view mirrors in automobiles. (Concave mirror/Convex mirror/Plane mirror)

Write uses of spherical mirrors.

Find out the radius of curvature of mirror such that, final image is formed on the object.

A kid of height $1.1 \mathrm{ft}$ is sleeping straight between focus and centre of curvature along the principal axis of a concave mirror of small aperture. His head is towards the mirror and is $0.5 \mathrm{ft}$ from the focus of the mirror. How a plane mirror should be placed so that the image formed by it due to reflected light from concave mirror looks like a person of height $5.5 \mathrm{ft}$ standing vertically. Draw the diagram. Find the focal length of the concave mirror.

A rod of length $10 \mathrm{c}\mathrm{m}$ lies along the principal axis of a concave mirror of focal length $10 \mathrm{c}\mathrm{m}$ in such a way that its end closer to the pole is $20 \mathrm{c}\mathrm{m}$ away from the mirror. The length of the image is

What can be the largest distance of an image of a real object from a convex mirror of radius of curvature $20 \mathrm{c}\mathrm{m}$ ?

A mirror that has parabolic reflecting surface suffers with

A point object is placed at the focus of a convex mirror the image will be formed at

In the experiment to determine of the focal length of a convex mirror, a convex lens is required because,

A real object is placed at a distance $f$ from the pole of a convex mirror, in front of the convex mirror. If focal length of the mirror is $f$ , then distance of the image from the pole of the mirror is ........

The image formed by a concave mirror is:

Figure shows two spherical surface of radii $R$ and $2R$ separating three transparent media of refractive index $\mu =4$, $\mu =2$ and $\mu =1$. A ray of light travelling in a medium $\mu =1$ is incident on outer sphere tangentially. The net deviation suffered by light ray will be

Assertion: Spherical mirror, unlike a plane mirror, does not form a precise point image of a point object.

Reason: Path of reflected rays depends on angle of incidence on mirror.

Assertion: The mirrors used in search lights are parabolic and not concave spherical.

Reason: In a concave spherical mirror, the image formed is always virtual.

Assertion: The mirrors used in search lights are parabolic and not concave spherical.

Reason: In a concave spherical mirror the image formed is always virtual.

________ is located behind a convex mirror.