Curved Mirror

A luminous point object is placed at $O$, whose images is formed at $I$ as shown in the figure. $AB$ is the optical axis. Which of the following statements are correct?

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 if the object 'O' moves towards the plane mirror, then the image I (which is formed after successive reflections from M₁ & M₂ respectively) will move:

A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it. When its distance from mirror is 20 cm its velocity is 4 cm/s. The velocity of the image in cm/s at that instant is:

An infinitely long rod lies along the axis of a concave mirror of focal length $\mathrm{f}$. The near end of the rod is at a distance $\mathrm{u}>\mathrm{f}$ from the mirror. Its image will have a length

An object is placed in front of a convex mirror at a distance of 50 cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no gap between the images formed by the two mirrors. The radius of the convex mirror 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:

A large temple has a depression in one wall. On the floor plan, it appears as an indentation having a spherical shape of radius $\mathrm{2}.50 \mathrm{m}$. A worshipper stands on the centreline of the depression, $\mathrm{2}.00 \mathrm{m}$ out from its deepest point, and whispers a prayer. Where is the sound concentrated after reflection from the black wall of the depression?

A thin road of length d/3 is placed along the principal axis of a concave mirror of focal length = d such that its image, which is real and elongated, just touches the rod. Find the length of the image?

What is the equation for parallax?

Why focal length of concave mirror is negative?

What is Parallax in concave mirror?

What is the equation for parallax?

An object is placed at $30 \mathrm{cm}$ from the concave mirror of focal length $20 \mathrm{cm},$ the nature of the image and magnification will be

Focal plane of a spherical mirror is parallel to the principal axis of the mirror.

A person looks at the image of two parallel finite length lines $PQ$ and $RS$ in a convex mirror (see figure)

Which of the following represents schematically the image correctly? (Note : letters $P,Q,R$ and $S$ are used only to denote the endpoints of the lines.)

In the following, ray diagram of convex mirror,when object is placed at infinity then the nature of the image is _____________.

In a convex mirror, magnification is

In a concave mirror for real images magnification is taken in respect of heights.