Spherical Mirrors

When a spherical mirror is held up almost facing the sun, a sharp image of the sun is formed on a small piece of paper, which causes it to catch fire. The spherical mirror is _____ in nature and the sheet of paper is placed at the _____ of the mirror. Fill in the blanks by choosing an appropriate option from the ones given below.

A student determines the focal length of a device 'X' by focusing the image of a distant object on a screen placed $20 \mathrm{cm}$ from the device on the same side as the object. The device 'X' is

What are real life applications of a concave mirror?

An object of height $10\mathrm{mm}$ is placed in front of a concave mirror and virtual image of height $20\mathrm{mm}$ is obtained. If the object is placed at $20 \mathrm{cm}$from the concave mirror, the focal length of mirror is

Identify the correct statement:
 

Type of spherical mirror are:

Correct relation between radius of curvature($R$) and Focal length ($F$) of a spherical mirror is:

An object is placed at a distance of $10 \mathrm{cm}$. From a convex mirror of focal length $15 \mathrm{cm}$. The position and nature of the image are :

_____ is located behind a convex mirror :

In the following diagram ‘$M$’ is a mirror and ‘$P$’ is an object and ‘$Q$’ is the magnified image of ‘$P$’ formed by the mirror. The mirror ‘$M$’ is a:

A spherical mirror and a thin spherical lens each of focal length $-10 \mathrm{cm}$ are given. The mirror and lens are likely to be:

Which of the following mirror is used by a dentist to examine the patient tooth?

A concave mirror of focal length 15cm forms an image. The position of the object when the image is virtual and linear magnification is 2 is.

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?

The ratio of the focal length of spherical mirror to its radius of curvature is

An object placed at the centre of curvature of concave mirror. Its image is formed at :

At focus $\mathrm{F}$ and between $\mathrm{F}$ and $2\mathrm{F}$, a concave mirror always forms a

Give the ray diagrams indicating the position, size and nature of the image formed by a convex mirror when an object is kept

(a) at infinity

(b) between pole and infinity

Describe the formation of images in both the cases.

An object is placed in front of 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 plane mirror is 30 cm. It is found that there is no parallax between the images formed by two mirrors. Radius of curvature will be

A candle flame 3 cm is placed at a distance of 3 m from a wall. How far from wall must a concave mirror be placed in order that it may form an image of flame 9 cm high on the wall