Concave mirrors can produce both real and virtual images; they can be upright (if virtual) or inverted (if real); they can be behind the mirror (if virtual) or in front of the mirror (if real); they can also be enlarged, reduced, or the same size as object.

The distance from the lens to the focal point is called the focal length. For converging lenses, the focal length is always positive, while diverging lenses always have negative focal lengths.

The size of the image formed by the convex mirror is always smaller than the size of the object irrespective of the position of the object.

For a real object between f and the mirror, a virtual image is formed behind the mirror. The position of the image is found by tracing the reflected rays back behind the mirror to where they meet. The image is upright and larger than the object.

The image formed by a concave mirror is seen to be virtual, erect and larger than the object. The position of the object must then be : (i) between the forus and curvature. (ii) at the centre of curvature.

Explanation: Here we have H 1 as 1 cm, The distance of the image formed is given as -15 cm. And the focal length of the object is given as -10 CM. Now since we get the value of v as -30.

Solution : The object lies between pole and principal focus of concave mirror. Therefore, the image formed is virtual, erect and magnified. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Solution. When an object is placed at a distance of 20 cm from a concave mirror of focal length 20 cm, the position of the image is at infinity. The reason being, the image formed by a concave mirror is at infinity when an object is placed at its focus.

The change in position of an object with respect to its surroundings in a given interval of time . Motion describes in terms of displacement, distance, velocity, acceleration, time, and speed. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.

When an object is placed 20 cm from a concave mirror a real image magnified three times is formed. When an object is placed 20 cm from a concave mirror, a real image magnified three times is formed.

If the magnification is 4 of the image formed by a concave mirror, the nature of the image formed will be virtual and erect.

What is the nature of the image formed by a concave mirror if the magnification is 3. Since the value of magnification has a positive value the image formed will be virtual and erect. Here the value of the magnification is +3, therefore, the image that will be formed will be virtual and erect.

1 Answer. (a) If m = + 4, then the image is virtual and erect. (b) If m = – 2, then the image is real and inverted.

The minimum distance between an object and its real image in the case of a concave mirror is Zero.

This will equal (1/image distance) when (1/object distance) is zero. So, when the object is infinitely far away, an image will still form; and the location of the image (when the object is far away) occurs at the focal length of the lens.

When the object is at the focus of a concave mirror, the image is formed at infinity.

Height of the image h’ = mh = 0.5 x 2mm = 1 mm.